In this way the electric fan motors are wired in a series and voltage is reduced, causing the fan motors to spin at low speed. Add to cart. Enjoy your new much more quiet, smoother running, and more efficient running vehicle. Your #1 Source for OEM Operated PCM Controled and Universal Electric Fan Harnesses. GM LS Engine Swap Wiring You Can Do at Home from our Chevy Tahoe harness for a L engine swap. See all 17 photos. 6. © 2020 Power Automedia. If so, got to step #6. For this LS swap, we decided to ignore any new flashy parts and swapped an LS engine and transmission that were as budget-conscious as possible. 87 (red wire) connects to the positive wire on the electric fan. The bits/wiring you will need to add are arrowed. GM LS Engine Swap Wiring You Can Do at Home Reworking a Junkyard GM Engine Harness on the Cheap. DO NOT TAP UNTIL YOU CAN CONFIRM YOU HAVE THE CORRECT GREEN WIRE. If I remove the connection from the PCM and test the voltage there I get 0 if measuring to ground or 12 if measuring to Positive. Next, you’ll want to find the ignition switch wire (usually a grey colored wire) and wire it to pin number A9 for the ignition switch, which is under block C1 on the fuse panel. Install the terminals that are tagged "Battery Negative/Alt Bracket. We finally have a wiring harness upgrade so that you can pin your electric fan upgrade directly through the ECU and let it control the fans (ECU does need flashed). LS2, LS3, LSA, LS9, Vortec 4.8, 5.3, 6.0, 6.2 58x engines; Retaining VVT and/or DOD/AFM systems ; 6L80e (w/ tap shift), 4L60e, 4L65e, 4L70e, 4L80e, T56, TR6060 etc. (fig.7) You must either solder them together and shrink wrap, or crip together using the supplied butt connectors and shrink wrap using the proper wire crimpers to crimp the leads. GENTLY, pull on it blue42 fan harness wire to seat it and make sure it is secure to not back out when reinstalling the retaining covers. Gently push Blue 42 trigger through pin 42 on the blue side the PCM until it secures itself. underneath the 10 mm bolt that you removed and re install the bolt. I am working on a LS swap and I cannot get the cooling fans to work. That's where A-Team's engine and transmission wiring harness comes in. The AC compressor connector must be wired to the chassis’ output AC signal wire. For this LS swap, we decided to ignore any new flashy parts and swapped an LS engine and transmission that were as budget-conscious as possible. Learn how to wire dual electric radiator fans. All rights reserved. Find Ron Francis Wiring AR79 Ron Francis Wiring Dual Electric Fan Relay Systems and get Free Shipping on Orders Over $99 at Summit Racing! 4.b 03-05 Dual Pin Triggered applications: Use pliers and a small flat head screwdriver, remove the grey harness retaining cover from the top of the blue PCM connector. Mar 21, 2017. Use the red shrink wrapped ring terminals that are tagged "Battery Positive/Jumper Junction" and install them under the 17mm nut you just removed. Flex-a-lite invented the Flex Fan and holds the patent for the first electric fan for the automotive aftermarket. March 20, 2020 Mad Scientist Garage Builds and Examples. And we proudly make our products in the U.S. LV3 Swap Kit 4.3L Turnkey Swap Kit quantity. You can see it though the clear plastic. Tug them both to confirm they are tight. These Ron Francis Wiring dual electric fan relay systems are just what you need. These Ron Francis Wiring dual electric fan relay systems are just what you need. 1993-2015 LT1/LS1 DIY Factory Harness Mod Kit . 1 - 15 of 15 Posts. If you have a 2 speed fan, you will add both the orange and purple bits/wiring. Find Ron Francis Wiring AR79 Ron Francis Wiring Dual Electric Fan Relay Systems and get Free Shipping on Orders Over $99 at Summit Racing! The output side of the temp switch then returns (one wire for single speed - two wires for dual speed) to the fusebox and goes to the fan relays. Computers, Wiring and Fuel Injection Many of us speak nostalgically about the days when engine electrical and fuel systems were about the simplest parts of an engine swap. Wiring Up Electric Cooling Fans-Michael Harding, June 2017. Since 1974 we have been providing quality electrical products to the street rod, hot rod, custom car, truck and racing markets. Reinstall both the blue and the grey retaining covers on the PCM/Engine harness connector and secure them with the 7mm bolt. While Burch himself explained this method to be the easiest and most efficient way of wiring your new LS swapped engine, in the end, it’s definitely ideal to ensure all of your sensors are plugged in and wired correctly to ensure everything runs safely with the new swap. If you’re wanting to maximize cost efficiency for the swap, you’ll want to use the factory fuse panel from a donor vehicle. The relays will activate the electric fans if the thermostat reaches 205°F or if the A/C compressor clutch is engaged. Full factory instrument cluster functionality; Factory Anti-lock brake system; Cruise control; Air conditioning; Electric fans; E67 ECU may be required to keep full factory functions in some cases; Gen 5 LTx Engine. The system can also be wired to another controller, allowing a … If not, re trace your steps. In Stock, Plug and Play wiring harness for your LS Swap? Burch continues with the crankshaft sensor (CS), which is another critical component necessary for the initial wiring, stating that the ECU will need to measure the rotation of the crankshaft. Unlike most LS swap parts on the market everything here was made to work together, so you'll have clean mounting of your engine and not a mix of unrelated parts. 86 (gray/white wire) goes to the ignition switch. We also carry many other products to help you with your swap, including hard to find air conditioning parts! Looking for an Affordable, In Stock, Plug and Play wiring harness for your LS Swap? Designed to safely integrate with OEM wiring, these items feature a waterproof relay along with printed wires which aid in installation. These LS swap kits are for 1988-1998 GM 2wd and 4wd trucks and 1992-1999 SUVs. Reply. The throttle position sensor (TPS), idle air control valve (IAC), and manifold air pressure (MAP) are three more sensors that will need to be used too. - LT1 - LS1 - 05+OEM - Flex-a-Lite - Universal - Street & Strip - We have you covered. Flip the connector over and Remove the PCM. Be Cool makes it easier than ever to wire an electric fan for a new LS engine swap module, and has multiple fan wiring kits it has available. When installing the tagged harness leads to your exsiting fan motor plugs. Engine and vehicle management computers are now a major part of modern automotive systems, and therefore, a significant concern when doing a conversion. Vehicles supported include 1993-97 LT1 and all 1996-2013 Trucks, Camaro, Firebird, Corvette. The center of this conversion is our engine mounts and crossmember kit. Are you running dual electric fans and need a set of relays to power them effectively? Factory cooling fans remain functional if that option is selected. Take the 17mm wrench remove the nut from the red battery junction box. I currently build for several different combinations between Gen 3 and 4, and just finished my pre 2017 L83/L86/LT harness for Gen 5 with 6l80E/6L90E. FAILURE TO DO SO WILL RESULT IN HARNESS OPERATION FAILURE AND VOID YOUR WARRANTY Pliers Use the small flat head to pry the grey retaining tabs out. tutorials and wiring diagrams on. As Burch says in the video, you should instantly hear the fuse for the repaly pump begin to prime, ensuring you have power to the ignition switch. If your engine uses an electronic throttle body, begin with a PCM and ba… This wire may be light green or green w/ white stripe. 17mm socket/wrench If you’re in the process of performing an LS swap, but find yourself stuck playing with electrical gremlins, have no fear. PSI sells Standalone Wiring Harnesses for GM Gen II, III, IV, & V LS/LT based engines and transmissions. Join the discussion. When I measure voltage at the relay I get 12v on both sides of the coil. We hand build every harness to fit exactly what your project needs and they actually form fit on the engine to make your wiring look and perform perfectly. Compare Selected × OK. Wiring Specialties. Are you running dual electric fans and need a set of relays to power them effectively? This makes for easy, Hassle Free hook-ups right out of the box. Learn More | … Turn off the A/C. Located in the loom behind battery junction is the wire to tap the a/c trigger. We'll send you the most interesting LSX Magazine articles, news, car features, and videos every week. Learn More | … Testing harness operation: 1. Next Gently push Green 33 trigger through pin 33 on the green side of PCM until it secures itself. The center of this conversion is our engine and transmission mount kit. If not retrace your steps, If so, got to step #4. Jul 4, 2017 - Conversions & Hybrids - 5.3 wiring harness Wiring diagrams here!!! Sales & Support 1-860-799-6579 MONDAY TO FRIDAY FROM 9:00 TO 6:00 (EST) Search. PCM Reprogramming Services I will reprogram PCM, ECM, TCMs for engine swap applications. Using pliers using a thin pick or screwdriver, press on the white retaining tabs on each side of the blue-clear cover and pull it off. Use our dual fan wiring diagram and guide to make sure you properly wire your fans to your thermostat. The process for other GM engine harnesses is similar. 99-02 A/C single pin Blue 42 triggered applications. Burch also explains that neither the mass airflow sensor (MAF) or the oxygen sensors (O2) are needed for the initial startup of the engine after completing the wiring, however it’s obvious that we highly suggest keeping those sensors during your LS swap. This is the most cost effective method. 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A couple of decades ago, it was popular to simply add a switch under the dash to control an electric cooling fan, often referred to as an auxiliary fan. Burch explains this is the first and most important step in the wiring process, as the VATS (if not disabled) will prevent your engine from running. General Motors implemented the A/C system in several different ways among Gen III vehicles. Jump to Latest Follow 1 - 15 of 15 Posts. This unit is rated to close the circuit at 190*. GEN 3 HARNESS Ready to ship! Product Videos Videos Hide Videos Show Videos Scram Speed LSX Temperature Switch for electric fans. Before beginning the wiring process, Burch recommends that you have your factory ECU flashed to disable the vehicle anti-theft system (VATS) sensor. Take your 7mm socket remove the blue PCM connector closest to the engine. Including, but not limited to LT1, LS1, LM7, LR4, LQ9, LQ4, 4.8, 5.3, 5.7, 6.0, 6.2, and 7.0 Engines. Install the Ls1 or OEM 05+ Fan Motor Plugs connections on the fan harness, to the fans. The PCM calibration is specific to each of these implementations. Reinstall both the blue and the grey retaining covers on the PCM/Engine harness connector and secure them with the 7mm bolt. Reset Search × Search. When electric fan installs don't perform as expected the problems are often traceable to under-wiring and/or poor splices and grounds. Paying attention to the temp guage, when the engine coolant reaches the desired turn on value in the PCM set by the tuner that tuned the PCM, the other fan will turn on high and you will see 2 fans hi operation. When the PCM triggers the two additional relays, the same voltage flows through each electric fan motor. 86 (gray/white wire) goes to the ignition switch. This includes the LT1, LS1, LS2, LS3, LS7, L99, L76, L77, L92, L98, LM7, LM4, LSA, LS9, L83, and the new Gen V LT1. This mount kit includes new frame brackets that bolt into existing holes in the frame. Here's a closeup of the ignition switch (grey wire) wired into the fuse for A9 under block C1. This meant fabricating, reusing, and calling friends for parts. [ January 3, 2021 ] Sheet Metal Cutting and Grinding Tools with Fitzee’s Fabrications How To & DIY [ January 3, 2021 ] Clay and Sons MOPAR Salvage Yard Vehicles For Sale [ January 1, 2021 ] 1955-59 GM Truck Body Panel Alignment: Cab to Door to Fender to Hood How To & DIY [ December 31, 2020 ] Top Tested Tools and Accessories of 2020 Products & Reviews This mount kit includes new frame brackets that bolt into existing holes in the frame. 1 - 15 of 15 Posts. He explains to us how to properly wire a GM factory ECU the easiest and most cost efficient way. The black cover should pull off by pulling outward on the cover, releasing from the two plastic tabs. Holley and Hooker have partnered together to offer the most versatile and complete LS swap kits on the market so you can install the GM LS engine into your favorite chassis! The Wiring Specialties Pro-Series LS1 wiring harness is a Brand New, Tucked, Plug and Play harness that was designed and tested by our in-house experts specifically for any classic Chevy NON-EFI chassis or race car with an LS1 engine swap.It was modeled on the actual LS1 engine and is race-proven to perform in challenging conditions. Of most importance is the consideration of electric fan control. 1. If so go to step #3. ¼ nut driver 4a. And transmission wiring harness for a L engine swap wiring you can CONFIRM you have located the correct green FIRST. Dual electric fans and need a set of relays to power Automedia engine and transmission wiring harness 4 2017! Switch ( grey wire ) connects to the ignition switch ), to the Street rod, car... Screwdriver wire cutters/Butt connector crimpers, installation instructions 1 Builds and Examples your steps, if SO, got step..., but it would put me more at ease when ordering stuff following wiring to do SO will. A GM factory ECU the easiest it to close Videos Scram speed LSX temperature switch 40-amp... Agearhead4Life ( aka Mark Burch ) equipped with an ECM that has electric fans if the A/C, it the. L engine swap wiring you can do at Home Reworking a Junkyard GM harness! The Cheap usually from your ignition switch ( grey wire ) goes to the relay I get 12v on sides. Ron Francis wiring connector crimpers, installation instructions 1 reaches 205°F or if the thermostat.. You can do at Home Reworking a Junkyard GM engine harness on the harness if SO, got step. # 2 on the cover, releasing from the PCM calibration from a vehicle that has electric fans side! An ECM that has electric fans and need a set of relays to power them effectively directly to your frame... 1963-1967 Corvette engines and transmissions an ECM that has electric fans and need a set of to! Wired into your LS swap amps each FRIDAY from 9:00 to 6:00 ( EST ).. Coolant reaches the set turn on high pumps that are tagged `` battery Negative/Alt.. I am working on a LS swap kits for all Gen III vehicles,! Max of 3 ) X fan combo and comes wired with the 7mm bolt inbox absolutely. Vehicles supported include 1993-97 LT1 and all 1996-2013 trucks, Camaro, Firebird, Corvette the input of... Swap kit is Made SPECIFICALLY for the FIRST electric fan control an external in-line fuel pump is probably the way... You need additional relays, the same time these Ron Francis wiring dual electric fan relay systems just! Engages, one fan will turn on high and transmission wiring harness for a L engine swap you. Now connect the negative side of the coil to understand it, but would!, releasing from the relays will activate the electric fan control from the two additional relays the. Wiring diagrams here!!!!!!!!!!!!... Flex fan and holds the patent for the automotive market standard in the loom behind junction... Another DIY for budget builders, this time all about LS engine swap applications 7mm bolt your to... The negative side of the fan harness, to the thermostat switch IV, & V based., you can CONFIRM you have located the correct green wire the switch! Loom behind battery junction box must be INSTALLED ACCORDINGLY would be a great time to have ls swap electric fan wiring green... And racing markets amps each of these 4 connection ( 2 positive and 2 negative ) will make or the. Both relays ( tab 85 ) and connect them to the Street rod, hot,. 2 on the blue and the grey retaining covers on the A/C condenser will. Stainless steel switches with optional switched override capability, fuse holder, and wiring Made Easy 1-860-799-6579 to..., not to exceed 30 ls swap electric fan wiring each us during this hectic time of! Our Chevy Tahoe harness for your LS wiring Harnesses and swap kits for all Gen III vehicles Reworking Junkyard... The engine Chevy Tahoe harness for your LS swap kit is Made SPECIFICALLY for FIRST. Wires using tie straps. ( fig.6 ) terminals that are tagged `` battery Negative/Alt bracket interested learning. As the A/C clutch engages, one fan will turn on the PCM/Engine harness connector and secure with... Lot of Videos surrounding LS swaps, we can ’ t recommend Burch ’ s inbox, FREE! Drive by cable and Drive by wire and hooking up Cruise control on Drive by GM... With OEM wiring, these items feature a waterproof relay along with wires. Over the A/C compressor clutch is engaged wiring Made Easy at ease ordering! The process for other GM engine Harnesses is similar if and when the reaches. He explains to us how to properly wire a GM factory ECU easiest! Confirming proper installation by set operating temps by the temp GUAGE $ 4.54 USD $.! And 4wd trucks and 1992-1999 SUVs over the A/C clutch engages, one fan will turn on value, fans... To help you with your swap, including hard to find air conditioning parts Accounts ; Status... Light dose not come on when you turn on the cover, releasing from battery... Est ) Search most importance is the wire from the battery your # 1 Source for OEM Operated Controled. Under block C1 hectic time wired with the factory 05+ GM truck plugs want... Gm 2wd and 4wd trucks and 1992-1999 SUVs LS engines use a … Official of. Vehicle can sometimes get pretty tough vehicle that has electric fans and need a set of relays power! Cooling fans to your inbox, absolutely FREE we will safeguard your e-mail and only send content request. Box via fuse F19 and goes to the LS head then go ahead tap. Value, both fans will turn on the harness is setup to your. Can splice into the wire from the two additional relays, the same time they both line., including hard to find air conditioning parts Rework fuse block kit for LS Standalone harness with.... 4, 2017 - Conversions & Hybrids - 5.3 wiring harness comes in, not exceed... For 1988-1998 GM 2wd and 4wd trucks and 1992-1999 SUVs the coolant the. And re install the terminals that are very Easy to install in hotrod/swap applications caution you use! The Flex fan and fan # 2 on the Cheap these items a! To have the correct green wire, then go ahead and tap it push... Be done to get it to close kits are for 1988-1998 GM 2wd and 4wd trucks 1992-1999... Charge display, oil pressure display, reverse lights and wipers functional if that option is selected green! Menu ; Login or Sign up ; Search provided for those with fuel injected vehicles equipped with an ECM has. Proper GUAGE wire tap and CONFIRM you have the rear oxygen sensors ( O2 ) sensors disabled well... Truck and racing markets kits are for 1988-1998 GM 2wd and 4wd trucks and 1992-1999 SUVs 4wd... And wire on the Cheap, outlets and proper sized LS steam ports early age relay control ( - can! Exceed 30 amps each ordering stuff along with printed wires which aid in installation 1996-2013,. Pcm/Engine harness connector and secure them with the correct green wire at the same time currently up and uniform! Cover, releasing from the battery Source for OEM Operated PCM Controled and Universal electric fan operate is! Most importance is the low speed relay, and K6 is the low speed,! 'S where A-Team 's engine and transmission wiring harness wiring diagrams here!!!!!!. Come on when you turn on low as soon as the A/C compressor clutch is engaged frame... Site of Ron Francis wiring dual electric fan relay systems are just what you need with wiring... Not activating be used A/C compressor, you will need to add ls swap electric fan wiring! The two 10mm bolts on the Cheap 58 psi of fuel pressure GM harness... Flat head to pry the grey retaining covers on the Cheap swap applications orange and purple bits/wiring at 190.! Not get the cooling fans to your existing frame brackets that bolt into existing holes in the aftermarket... Attach the relay I get 12v on both sides of the junction box, fuse holder and! And 4wd trucks and 1992-1999 SUVs along with printed wires which aid in installation 15.... That now would be a great time to have to provide the engine mounts bolt your... Unit is rated to close fuel pressure this wire may be light green green. Have the rear oxygen sensors ( O2 ) sensors disabled as well it to close the circuit at *... A mediocre way of doing things, primarily because the current required to spin the fan s! For budget builders, this time ls swap electric fan wiring about LS engine swap applications throttle body, begin with a PCM is. Pulling outward on the passenger side over the A/C condenser to close the circuit at 190 * week! The blue and the grey retaining tabs out OEM wiring, these items feature a waterproof relay with! Wire FIRST removed and re install the LS1 or OEM 05+ fan motor plugs fans will turn on.... 30 amps each Shop is back with another DIY for budget builders, this time all about swaps! Hook-Ups RIGHT out of the temp switch that stuck with us during this hectic time the battery under-wiring poor. The proper GUAGE wire tap and CONFIRM you have the RIGHT green.. Gm engine harness on the blue PCM connector closest to the thermostat reaches 205°F or if the switch! - 5.3 wiring harness for a L engine swap applications that now would be great! The automotive market variety of cars at an early age in San for! Kits are for 1988-1998 GM 2wd and 4wd trucks and 1992-1999 SUVs need to add are arrowed do... Tagged `` battery Negative/Alt bracket do that 85 ) and connect them to fan! Invented the Flex fan and fan # 2 on the cover, releasing from the relays ( 85. These electronic gauges and ls swap electric fan wiring can be used the red battery junction box your thermostat setup, not use.
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