Holley sniper efi electric fan wiring diagram. Can this be hooked up to the .

Holley sniper efi electric fan wiring diagram So, However, if you want the electric fan(s) to run key-on/engine-off (until your programmed Off setting), then you can use the preexisting Electric Fans #1/#2 Output in "Basic I/O" - System Parameters. How To Connect A 3 Pin Or 4 Fan The Motherboard Cooler Master Faq. IRS Sale - Savings up to 30% off! HyperSpark Ignition for Sniper EFI; Also in Ignition. Ignition Coils. Blueprint 306 w/Holley Sniper EFI, TKO 600, power steering, Breeze fan shroud, trunk cubby, & HyperSpark Ignition for Sniper EFI; Also in Ignition. Today we walk through how to configure the Sniper EFI unit to trigger electric fans directly on the 1967 Mustang. Electronic Conversion Kits. The output cuts-off the A/C when you smash the peddle; default is 65% WOT. Two questions 1: is that correct light blue to green relay ground? 2: what do I do with the two green thermo fan Holley efi fan wiring diagram Holley efi fan wiring diagram sniper fuel pressure electric gauge installing Wiring diagram sniper holley efi fan ten car racingjunk stereo fujitsu advanced unit features connector i1 collection. Yes, terminal #85/Ground is the industry standard for good quality relays , with or without a diode. This thread is a pictorial summary of my use of SPAL Brushless cooling fans with Holley EFI, and linked from andrewb70 topic on same concept using larger, single GM OEM SPAL brushless fan with Holley EFI PWM control I believe Volvo has a 2 temp switch. Questions: I've read several I show you how I installed dual SPAL fans on a Derale shroud on my 1981 C10. It connects to a 12 volt key source as does the pink wire from the Sniper and the pink wire from the distributor. I want to run the factory A/C setup with the stock LS compressor. Follow the wiring diagram provided by Holley to ensure accurate connections. I am trying to figure out the Wiring for the sniper to control the fan. 6 • Large 16 Pin Connector: Sniper 2 EFI Main Wiring Harness connection • User Interface Connector: M8 Can 1 connection, for the programing user interface o 3. Other people are saying 85 for Sniper wire, 30 is to the battery, 86 is key on trigger, then 87 is for the fan. Any images or specific resources would be great. How to videosWiring diagram sniper holley efi fan ten car racingjunk stereo fujitsu advanced unit features This kit is available for anyone who has two cooling fan. ) is adequate, engine block is well grounded (), and the electric fan wire gauge (AWG) is sufficient. This connector contains: Pin Color Labeled Name Function A Orange Input #1 (-) Optional - Connect to a ground triggered A/C relay B Yellow Input #2 (-) Optional - Connect to See if I got this right. The green Thermo Control wire, either near the fan wiring or the second one in the sender bundle needs to be connected to the fan control (light blue) wire from the Sniper. I cannot get the Sniper EFI to turn the # 1 (low speed) to come on. 2) Pin #86 on both relays go to the battery +. The PDM’s diagnostic LEDs will assist in troubleshooting faults of the 3 1. I purchased 2x Mr. I wired that according to the wiring diagram Holley suggested, blue wire to relay ground. Connect the CDI Ignition Main Power (+), Main Ground (-), Switched 12V, and Points to their corresponding locations. Thanks to Sniper 2 converting to EFI just got a whole lot easier. 8779#post98779 (Holley Sniper EFI A/C IAC Kick, Electric Fan #1/#2 Wiring The Power Distribution Module (PDM) is a cost-effective and optional accessory that isolates the core of your EFI and ignition wiring into one, easy to use location. Super simple. That solid state relay has one +12V The Holley 534-134 Cooling Fan Relay Kit is wired for a Ground signal to energize the relay's coil terminal #85. As many of you know, I'm a proponent of using PWM fan control with any Holley ECU that supports it (everything except Sniper). Google Volvo electric fan relays. Gauges. 3. HP EFI Tuning & Tech. Step 2: Disconnect the battery. . Holley Performance Products has written this manual for the installation of the Sniper EFI Spark plug wires cannot be of Solid Core Construction – It is recommend to use MSD 8. This basic manual contains the information necessary for The Holley Sniper EFI electric fan wiring diagram is a comprehensive guide that outlines the electrical connections and configurations necessary for integrating an electric fan In this tutorial I will show you the basics on how to install setup and test electric fans. Holley Sniper 2 EFI Power Distribution Modules (PDM) are cost-effective and optional accessories that isolate the core of your EFI and ignition wiring into one, easy-to-use location. The input tells the system that the A/C has been turned on. Not sure why I haven't been able to find a diagram or anything specific showing how to wire the ground output from the HP to shutdown the A/C. Sniper EFI System Nitrous Wiring. Proper wiring is essential for the system to function correctly and provide reliable performance. Sniper 2 is a brand new design from the ground up. 4 Pin Relay Wiring Diagram Vs 5. Demystifying Holley Terminator And Sniper Ignition. The Holley Sniper EFI has an input and an output for A/C. Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. As designed the Sniper will ground the trigger to prime the system for about 5 seconds. View and Download Holley Quadrajet Sniper EFI installation manual online. Crank Triggers; Electronic Conversion Kits; Heat Shielding; Ignition Coils; Far as the wiring: I moved the unassigned A/C Kick input to pin A3 since it wouldn't work on A13 or A4, and I'm using A12 for an oil temp sensor. CDI IGNTION . From what I'm able to understand: 1) I need to connect the Sniper light blue wire to pin #85 on one relay & the Sniper light green wire to pin #85 on the second relay. HyperSpark Ignition for Sniper EFI. I had one on the relay for my old electric fuel pump, and just didn't think about it for this one. Holley Sniper Efi Wiring Spot Check. ). Back to Ride. com! will look up a wire up diagram tonight unless you got one handy, thx again. 5 INTRODUCTION & SYSTEM REQUIREMENTS Holley Performance Products has written this manual for the installation of the Sniper EFI TBI fuel injection system. 280471 - Lo Pro Fan Wiring Diagram 280473 - 24" LoPro Electric Fan/Shroud Assembly 382800-MBA - Steamline 2-Way Inline Bulkhead #8-#10 Holley EFI Wiring Diagram - Holley Sniper Gen II EFI Wiring Diagram - Holley Sniper Gen 5 EFI Wiring Diagram 366616 - Pressure Transducer Wiring Diagram; Hello, I'm wiring up my new Sniper EFI. This blog post will take you through the details. Individual service items are available for replacement of components. This vid is for folks that have a Sniper 2 EFI and want to wire dual fans to allow for control over when they cycle on/off using the Holley Sniper 2 with PDM Holley Sniper EFI Wiring Instructions. A5 – TPS Signal The white wire from the CDI box is a points in. Electrical and Wiring. Join the Holley Family. that I have two Electric Fans, that are switched parallel. Vacuum Port Side View Electric In-Line- Included with most Sniper EFI masker kits, these pumps will be mounted in-line within two (2) feet of the fuel tank and below the lowest point of your tank (gravity feed). I need some help installing the Holley EFI PDM. Yes, terminal #85/Ground is the industry Holley Performance Products has written this manual for the installation of the Sniper EFI TBI fuel injection system. They can also be used when dual electric fans are installed using one switching device. Holley Sniper Efi Fan Wiring Diagram Holley Sniper EFI + Dual cooling fan wiring help | For B Bodies Only 4 Wire Computer Fan Wiring Diagram Holley Sniper Efi Fan Wiring Diagram - Onesed Dual Electric Fan Wiring Diagram Holley Sniper Efi Ac And Fan Wiring Sniper Efi Wiring Diagram Configuring and Wiring Sniper EFI System for Nitrous Oxide Fan wiring schematic holley terminator x; Welcome to Pro-Touring. We kept some of the tried and true features from the original Shutdown, Electric Fan #1 Output, and/or Mates to Input/Output connector on Main Wiring Harness and can be used for A/C Electric Fan #2 Output. When wiring an EFI system, you’ll need to find a switched ignition power source. Electric Fan Relay Kit Painless Performance. I purchased the Sniper 2 Master Kit, complete HyperSpark and the PDM. 200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration . The grounds of an electrical system are just as important as the power side. 5” TSLCD (553-202) o 5” TSLCD (553-200) o Sniper 2 BLE Module (558-498) • Coolant Temp Connector: Coolant Temp Sensor (CTS) Connection, PN 543-120 • Oxygen Sensor Connector: Wide Band Oxygen (WBO2) Tonight we are in the shop getting a second fan relay and the AC kick relay mounted and re installing 2 wires that I had removed from the 10 pin connector on Holley Performance Products has written this manual for the installation of the Sniper EFI Spark plug wires cannot be of Solid Core Construction – It is recommend to use MSD 8. This kit will turn on and off with the Ignition Switch (no sensor). Wiring the Holley Sniper EFI is as simple as wiring their Terminator or their Dominator. 470 Holley says terminal 30 should be fan, 87 for battery, 86 for battery (no key on trigger or switch needed), and 85 for Sniper wire. Dual relays protect BOTH fans, and provide full battery voltage with top quality wiring. Filter. It also offers step-by-step instructions for wiring the fan, including how to connect the power and ground I just got a Sniper 2 PDM to aid with wiring a Terminator X system. Skip to main content. So those three wires connect together and Proceed to connect the various sensor wires provided in the Holley Sniper EFI wiring harness. Holley Sniper Efi Electric Fan Wiring Diagram. This also eliminates the heavy load on the vehicle's ignition switch. The connector on this harness will plug directly into Holley PN 543-111. I'd like to confirm some stuff before I start making connections, since the wiring diagram is only for the Sniper. The small blue wire is open at rest and when the Sniper commands the fuel pump to be on, the small blue wire is grounded by the Sniper. X. Fuel Pumps and Regulators. It has the same relay terminal configuration, but different relay wiring. Originally Posted by Danny Cabral The Sniper EFI electric fan ground wires (pin C, light blue - Fan #1 & pin D, light green - Fan #2) trigger the relay coil − (terminal #85). To engage the A/C clutch using the Dominator, I know I need an Input going to the Dominator from the A/C Control Head. Out connects to in so the trigger signal from the Sniper goes to the CDI box to trigger the spark. I believe I have the relay setup properly, The Sniper EFI electric fan ground wires (pin C, light blue - Fan #1 & pin D, light green - Fan #2) trigger the relay coil − (terminal #85). I have the parameters for the # 1 low speed on at 160°F and off at 180°F and the # 2 high speed coming on at 185°F and off at max temperature. The Holley EFI, air conditioning & electric fans work Holley Sniper 2 EFI Power Distribution Modules. Holley Performance Products has written this manual for the installation of the Sniper EFI TBI fuel injection system. This wiring diagram will enable you to easily understand and follow the correct steps, ensuring that your fan operates So I’m attempting to set a Electric Fan on my Sniper, looking at the manual it says to hook the light blue wire to the relay ground trigger. Holley efi fan wiring diagram sniper fuel pressure electric gauge installing. Holley sniper 2300 efi installHolley sniper efi electric fan wiring diagram Holley sniper efi ac wiring diagramHolley sniper efi wiring hp. Replacing the legacy fuel delivery system in your classic car or truck can unlock better fuel economy, simplify maintenance, and improve reliability and drivability. I have an auto meter 2897 tach connected to the brown wire on the The Holley Sniper Fan Wiring Diagram is a valuable resource for anyone looking to install or troubleshoot their electric fan system. '92 Ford Mustang pinout for a specific application, locate the wiring diagram themselves contained in the WIRING APPENDIX, located in the software. Posts; Latest Activity; Photos . Crank Triggers. Be sure the fan output is enabled in the software. Primary Sensors Throttle Position Sensor (TPS) Holley EFI systems work with any 0-5V throttle position sensors. This manual contains information and diagrams related to wiring most Holley EFI products including ECU’s, ignition systems, nitrous systems, water/methanol injection systems, sensors, and more. Right? Relay is wired as follows: 85 - Sniper lite blue 86 - Hot Ignition 87 - Fan 30 - Fused battery 2) I want to use the Sniper Fan #1 (blue) and Fan #2 (green) outputs to control the speed selected. Page 1 Sniper Stealth 4500 (550-841 Shiny, 550-842 Black, & 550-843 Gold) Holley Sniper EFI FUEL INJECTION INSTALLATION MANUAL; Page 2 Failure of any one component does not constitute, nor does it justify, warranty of the complete system. 623" lift 114° LSA H/R camshaft, Trick Flow I wired the white/blue output wire to the green wire of the Vintage Air A/C dash controller (confirmed to have ground when A/C is in the on position). Holley fuel injection wiring diagram. Can this be hooked up to the The cooling fan relay kit (534-134) is designed to provide the power necessary to run a typical 12VDC-cooling fan. Electric Fan #1/#2 relay terminals In today's video I complete all the wiring for the Holley Sniper EFI and power it up for the first time!For even more content click the link below:https://li C3 Tech/Performance - Sniper EFI: A/C control wires - Looking for a QC check on my relay wiring. Heat Shielding. Strange that the Holley instructions for their Sniper fan relay kit does not mention a diode. Holley efi fan wiring diagram sniper fuel pressure electric gauge installing Holley fuel injection wiring diagram Holley sniper efi wiring msd sync dual advanced unit features box cd racingjunk timing. I'm now wondering if the fuel pump relay that comes with the Sniper has one. Customer may interrupt with a manual switch if so inclined. And if your setup requires two fans to keep it cool or you have an auxiliary fan on your oil cooler or trans cooler, a second fan can be controlled Hello. Stay up to date with the latest releases, events, promotions and more Anyway, I opened the Config File in Sniper EFI software and there was only one box that when ticked allowed only Fan #1 to fire with the A/C, The A/C IAC Kick is at 50%. How To Videos - V-Twins to V-8s. These wires will typically include connections for the coolant temperature sensor, oxygen sensor, throttle position sensor, and more. Will add it. Wiring diagram sniper holley efi fan ten car racingjunk stereo fujitsu advanced unit features connector i1 collectionInstalling the holley sniper efi kit – racingjunk news Holley efi fan wiring diagram sniper fuel pressure electric gauge installingHolley sniper efi wiring msd sync dual advanced unit features box cd racingjunk timing. Posted on 05 Jan 2024. 470" forged steel crankshaft & H-beam rods, Wiseco 4. You don't want to undo this functionality. Search. For safety purposes, always disconnect the battery before working on any electrical components. The atomic and the sniper both provide fan control wires as a ground, i have mine set to 180 and the controller grounds a relay that controls the fans. Holley Sniper EFI Replacement Sensors - Typically available at your local auto parts stores: This may include wire cutters, crimping tools, heat shrink tubing, electrical tape, and a wiring diagram specific to your vehicle and the Holley Sniper system. I used the light blue wire from the 10 pin from the sniper and tied it into the green wire on the fan relay ground. I made the trigger temperature points on both fans the same so they should both fire when the A/C is on. Also for: 550-867, 550-868, 550-869. 1. Time. Hi guys, I'm having trouble finding a diagram to hook these features up. Correct. This basic manual contains the information necessary for the installation of the throttle body, wiring, and sensors. So you'll need to permanently ground relay terminal #85, and cut the jumper wire from terminal #86 (to #87), and connect it to the gray/yellow Output #1 wire. Both are ground signals. I'm running a Terminator X Max in '86 C10, 5. The red wire is a 12 volt key on signal. May God's grace bless you in the Lord Jesus Christ. All Time Today Last Week since they plug right in, and don't come with a wiring diagram. The Commander 950 controls the relay via the DARK GREEN / WHITE wire. 2. This truck will be more or less a daily driver. NOTE: Always disconnect the Battery Negative (-) terminal first and attach it last. The Holley Sniper EFI Electric Fan Wiring Diagram provides a step-by-step guide on how to properly connect your electric fan to the Sniper EFI system. Page of 16. Both fans are controlled using the ground trigger output wires from the Holley I would leave the green wire off relay 1 & Relay 2 black relay switch wire connect to Holley Sniper see below 10 Pin Connector – Mating Harness PN 558-491, 8 wires are populated. The diagram includes detailed instructions and illustrations, making it easy for Proper wiring is crucial when it comes to installing and configuring the fan with the Holley Sniper EFI system. This turns on the relay to supply power to the fan through the YELLOW / BLUE wire. I also having it controlling a remote trans cooler fan that comes on at a different temperature, love the adjustability of it. Quadrajet Sniper EFI automobile accessories pdf manual download. Power and Ground: Start by connecting the THE INSTRUCTIONS DON'T TELL YOU EVERYTHING!!In this episode, we will walk through how to install some non-essential but totally necessary accessories on the A Holley Sniper EFI electric fan wiring diagram is a detailed plan that shows how to connect the electrical components of an electric fan to the Holley Sniper EFI system. 623" lift 114° LSA H/R camshaft, Trick Flow I have Ron Francis wiring and sniper efi. I have the Holley Sniper EFI and a Taurus 2-speed electric cooling fan using a Volvo fan controller. Also, look at where the live cursor moves to during this occurrence, and ensure that area of the Base Fuel & Timing Tables are Wiring an Electric Cooling Fan - Holley EFI. SNIPER 2 EFI power distribution unit pdf manual download. 11 Main Harness and Ignition Adapter 1 558-490 THROTTLE BODY INSTALLATION 1. E Fan Relay Installation How To The Holley Sniper EFI Electric Fan Wiring Diagram provides a detailed overview of the connections needed to install this advanced system. 10 guage wiring n never a problem. Good point. Strong alternator, 50 amp relay n 50 amp circuit breaker. Install the throttle linkage to the Sniper EFI throttle body. 4 Injector Sniper Efi Xflow 550 540 Shiny 541 Black 542 Gold 8 View and Download Holley SNIPER 2 EFI installation instructions online. Switched 12v Source For A Bos Only Mopar Forum. Install the keyed ignition wire on terminal 16. Then to get the A/C clutch to engage, I'll need to add an Output going to a A/C Clutch Control Relay. 2) The Sniper EFI electric fan ground wires (pin C, light blue - Fan #1 & pin D, light green - Fan #2) trigger the relay coil − (terminal #85). Collapse. 3L, DBC. When I was running electric, I just had both come on at the same time. Sniper EFI instruction manual: LINK - page 17 & 50. Whether you’re a seasoned mechanic or a DIY enthusiast, this The fan motor needs to be connected to the blue (+) and black (-) wires that are in the front harness for the fan. 2 block, Eagle 3. The PWM (pulse width modulation) is good if you are worried about the fan's longevity. First, the Sniper ECU should be grounded directly to the battery, and there should be good separation between the noisy high-current grounds like the solenoids and low-noise grounds (like the ECU inputs. 1 Important Wiring “Do’s and Don’ts” An EFI system depends heavily on being supplied a clean and constant voltage source. New member here. Review the install drawing on pages 2 and 3 for a typical installation of the Sniper 2 system using a Fuel Pump and Fan. Zander Miller IV 07 Sep 2024. '92 Ford Mustang GT: 385"/6. and Battery (-) wires to the heavy-duty Wire Lugs on the PDM. Sniper EFI instruction manual: LINK - page 17 & 50. Fan & Fuel Pump . The A/C IAC Kick is a momentary increase only when Ffr Radiator Fan Wiring. Stepping Up To Holley Hp Efi Controller Chevy Tri Five Forum. Yes, terminal #85/Ground is the industry standard for good quality relays, with or without a diode. This question is about installing a Classic Auto Air system on a V8 engine with a mild cam equipped with the Holley Sniper. I have a Pertronix ignition kit inside my distributor that takes the place of the old points. The diagram below is fairly self-explanatory but I will provide a few comments. I had purchased an MSD solid state relay for the Terminator X fuel pump, a cooling fan and an electric water pump using the Terminator X Outputs, fuel pump prime shot for easy starts and resistance to flooding. How To Wire An Electric Fan With A Relay On Classic Car. I have all hoses installed, but need to know what to do with A/C IAC Kick Input & A/C Shutdown Output. Here are some basic instructions for wiring the Holley Sniper EFI: 1. Using the Sniper’s built in capabilities eliminates the need for external fan or pump controllers and eliminates extra wiring. I used to run Sniper EFI Tuning & Tech. ) The Holley Sniper EFI Holley sniper efi installing kit racingjunk ignition connect Installing the holley sniper efi kit – racingjunk news Holley fuel injection wiring diagram. How to correct? I can't just reverse the wiring as I have two input wires (low & high) and one ground from the fan. Crank Triggers; Electronic Conversion Kits; Wiring Diagram: Water Pump, Electric Fan; Wiring Diagram: Water Pump, Electric Fan Here is the electric fan and water pump wiring. Using the correct length carb stud and nuts, tighten the Sniper EFI throttle body down progressively in a “criss-cross” pattern (60-80 in. But the relay isn't needed when using the PDM. The Sniper also features a built in fan controller. Overall, the Holley Sniper Fan Wiring Diagram is an invaluable resource for anyone working with electric fans and the Holley Sniper EFI system. INSTALLATION 1. The diagram clearly outlines the electrical components and connections involved in the installation. Wiring Harness and Relays Kits are the Ideal way to Wire High Amperage Components Like Fuel Pumps, Electric Cooling Fans, or Electric Water Pumps. Excellent option for those with plenty of space, easy to plumb, will require a return line after the fuel pressure regulator. MKIV complete kit w/powder coating and cut outs, serial #9189 delivered 10/10/17, first start - 10/5/18, legal - 10/08/20. The # 2 (high speed) comes on. Gasket 40100G Relays. Page 2 Diagram 1: Sniper EFI PDM TYPICAL INSTALL with Sniper 2 Wiring the Holley Sniper EFI system is a breeze with our Infinitybox 10-Circuit or 20-Circuit Kits. That's easily done! BUT to cutoff the A/C clutch at a certain throttle position, I need help installing dual Spal fans onto the Holley Sniper EFI system. 5 Super Conductor Wires with the Sniper EFI INSTALLATION: NOTE: Part number 520-1 is a complete See Figure 3 for diagram of vacuum ports. Wiring diagram for A/C Shutdown & A/C IAC Kick. Step 5: Wire the Ignition and Coil Two powertrain management systems from Holley that offer plug and play control for most LT engines starting at just $1999. Here are some great tips for installing and setting up the electrical components of a Holley EFI system. Some people use an old-fashioned test The Sniper EFI electric fan ground wires (pin C, light blue - Fan #1 & pin D, light green - Fan #2) trigger the relay coil − (terminal #85). Thanks. My problem is the kit came with the wiring harness, that has the fuel pump relay in it. The PDM can also distribute power to an EFI fuel pump and a cooling fan. Vacuum Port Side View Wiring diagram sniper holley efi fan ten car racingjunk stereo fujitsu advanced unit features connector i1 collection Holley efi fan wiring diagram Holley fuel injection wiring diagram Holle. Simply slide the stripped wire ends under the positive lock connector and SPAL&#174 electric fan relay wiring kits are designed to automatically turn on your SPAL&#174 electric fan when the air conditioning is turned on. I read that the 10-pin A Orange wire is just a momentary idle bump up and then the IAC takes over from there and maintains the idle at the programmed idle RPM. I have electric fans powered through a relay. Jegs Atomic Efi 2 121 2900 Master Kit User Manual Manuals. 3L SBF, Dart SHP 8. If assistance is required or if you need further Holley sniper wiring instructionsHolley terminator x electric fan wiring diagram terminator x wiring Holley sniper efi ac wiring diagramHolley sniper efi ac wiring diagram. lbs. Something cheap like a 1N4007 would be fine. Installing electronic fuel injection (EFI) using a kit from Holley is accessible to any hobby mechanic with basic skills, but it’s wise to consider the steps needed to get the car’s electrical system ready This is usually due to voltage drop when large, high amperage dual electric fans turn on. Holley Sniper EFI is a popular fuel injection system for performance and street applications. Ensure the electrical system (alternator, charge cable, battery, etc. 01-09-2024, 09:31 AM. Holley Sniper Efi Dual Cooling Fan Wiring Help For B Bos Only Classic Mopar Forum. (Holley Sniper EFI A/C IAC Kick, Electric Fan #1/#2 Wiring & A/C Shutdown Info) May God's grace bless you in the Lord Jesus Christ. This diagram is important because it ensures that the fan is properly installed and functioning, which is essential for keeping the engine cool and preventing [] The number 1 EFI conversion just got better. Hose Lines and Tubing. I am working on my 1990 third gen Chevy Camaro with a small block Review the install drawing on pages 2 and 3 for a typical installation of the Sniper 2 system using a Fuel Pump and Fan. Simply slide the stripped wire ends under the positive lock connector and tighten down the set screw. Sniper EFI instruction manual: LINK - This manual contains information and diagrams related to wiring most Holley EFI products including ECU’s, ignition systems, nitrous systems, water/methanol injection systems, sensors, “The Sniper EFI electric fan ground wires (pin C, light blue - Fan #1 & pin D, light green - Fan #2) trigger the relay coil − (terminal #85). Our Infinitybox system can interface with any electronic fuel injection system in the market. The Holley 558-400 I/O Auxiliary Harness B12 gray/yellow (Output #1) wire is a +12V Output. Shutdown, Electric Fan #1 Output, and/or Mates to Input/Output connector on Main Wiring Harness and can be used for A/C Electric Fan #2 Output. oeqbxju obuusl xdwfj smph znwc xicqf cqnwx dzbym jhrzdco ghyap mrqq tksypei dec goilops wezjxzs