The bits/wiring you will need to add are arrowed. Ron Francis Wires Work! Be sure to clear the PCM when installing the screws, the upper right hand corner is usually the best spot just be sure they clear the PCM and NOT TO SCREW THEM IN TO TOUCH THE PCM . GEN 3 HARNESS Ready to ship! 2. Stand alone LS wiring harness, ECM with vats cleared, LS engine and transmission Total. March 20, 2020 Mad Scientist Garage Builds and Examples. If so go to step #3. 9 _94_4.3_SS_ ... 1.6 roller rockers, Flex-a-Lite electric fan, Edelbrock headers, 2 1/2" Dual Flowmaster 40 series exhaust, dual high-flow cats, 3.43 limited slip rear, 15x8 & 15x9.5 billet rims, 95 Blazer front end w/cleared lenses... Save Share. 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. We use these to supply ground to either the fan or fan relay, but it's rated to 30 AMPs for use on the positive side as well. See all 17 photos. 5b.Notice Flex-a-Lite / Universal Fan Motor Plugs: This wire may be light green or green w/ white stripe. Add to Cart . If not retrace your steps, If so, got to step #4. Learn More | … As soon as the A/C clutch engages, one fan will turn on high. Startup guaranteed. He also recommends that now would be a great time to have the rear oxygen sensors (O2) sensors disabled as well. An … If your engine is moved too much, or you just want to upgrade, you will want to swap to electric fans. When electric fan installs don't perform as expected the problems are often traceable to under-wiring and/or poor splices and grounds. Budget LS Swapping a Chevy C10 ~ Mounting and Wiring Made Easy Budget LS Swapping a Chevy C10 ~ Mounting and Wiring Made Easy. Mar 21, 2017. Tell Us About Your Project Vehicle! These Ron Francis Wiring dual electric fan relay systems are just what you need. 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. All rights reserved. FUEL SYSTEM For the fuel system when doing an LS swap, the most common approach is to use a C5 Corvette fuel pressure regulator along with an electric fuel pump that has adequate flow, such as the Walbro 255. Pliers 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. LS wiring harnesses and swap kits for all Gen III and IV engines. It should should line up and look uniform like the rest of the pins. Finally, run a fused constant power to both of the red wires … FAILURE TO DO SO HERE WILL RESULT IN TROUBLE!. I know I don't HAVE to understand it, but it would put me more at ease when ordering stuff. 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. Jul 4, 2017 - Conversions & Hybrids - 5.3 wiring harness Wiring diagrams here!!! 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. 3. We also specialize in LS and LT swap standalone harnesses. Your #1 Source for OEM Operated PCM Controled and Universal Electric Fan Harnesses. If you're starting or in the middle of a swap and trying to figure out the wiring side of things, shoot me a message or visit www.lsharnessconnection.com to get started with your order! Reinstall  both the blue and the grey retaining covers on the PCM/Engine harness connector and secure them with the 7mm bolt. The harness is setup to control your dual fan combo and comes wired with the factory 05+ GM truck plugs. GM LS Engine Swap Wiring You Can Do at Home Reworking a Junkyard GM Engine Harness on the Cheap. Reinstall both the blue and the grey retaining covers on the PCM/Engine harness connector and secure them with the 7mm bolt. Reset Search × My Accounts; Order Status; Wishlists; 0. If you’re in the process of performing an LS swap, but find yourself stuck playing with electrical gremlins, have no fear. Take your 7mm socket remove the blue PCM connector closest to the engine. And we proudly make our products in the U.S. 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. Flip the connector over and Remove the PCM. This makes for easy, Hassle Free hook-ups right out of the box. 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. Flip the connector over and Remove the PCM. Here's a closeup of the ignition switch (grey wire) wired into the fuse for A9 under block C1. The center of this conversion is our engine mounts and crossmember kit. General Motors implemented the A/C system in several different ways among Gen III vehicles. 0 Comments. Electrical wiring in a vehicle can sometimes get pretty tough. 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. The black cover should pull off by pulling outward on the cover, releasing from the two plastic tabs. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. The process for other GM engine harnesses is similar. CAUTION YOU MUST USE THE PROPER GUAGE WIRE TAP AND CONFIRM YOU HAVE THE RIGHT GREEN WIRE FIRST. I am working on a LS swap and I cannot get the cooling fans to work. Of most importance is the consideration of electric fan control. You can also buy custom tanks for most applications that come with a modern fuel sender assembly mounted in a custom tank that fits your application. We also specialize in LS and LT swap standalone harnesses. - LT1 - LS1 - 05+OEM - Flex-a-Lite - Universal - Street & Strip - We have you covered. 17mm socket/wrench If not, re trace your steps. Flex-a-lite invented the Flex Fan and holds the patent for the first electric fan for the automotive aftermarket. Join the discussion. 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. GM LS Engine Swap Wiring You Can Do at Home from our Chevy Tahoe harness for a L engine swap. Chevy C10 LS Swap On a Budget . The fan(s) are triggered via a temperature switch and 40-amp relay combination. LS Swap DIY Harness Rework Fuse Block kit for LS Standalone Harness with Fans . Dan from DD Speed Shop is back with another DIY for budget builders, this time all about LS engine swaps on the cheap. Made in the USA. The MAP is located at the top of the back of the manifold. Compare These Parts Talk to the Experts. Turn off the A/C. Lubricate the PCM pins and wires on the harness tagged BLUE 42 and GREEN 33 using vaseline or die electric grease. Start by connecting power from the hot side of the battery to the panel’s main power terminal, which ensures all of the fuses in the fuse panel will receive power once you’ve connected the negative side of the battery. Direct-fit Flex-A-Lite® Extruded Core performance aluminum radiator and dual electric fan system for 1967-1972 full-size 1/2-ton Chevrolet or GMC truck and SUV with LS engine swap. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. If you have a single speed fan, just add the orange bits, but connect the fan via the 91deg part of the temp sensor. 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). THANK YOU to all that stuck with us during this hectic time. Jump to Latest Follow 1 - 15 of 15 Posts. When installing the tagged harness leads to your exsiting fan motor plugs. 1 - 15 of 15 Posts. Looking for an Affordable, In Stock, Plug and Play wiring harness for your LS Swap? For any LS swap, you’re going to have to provide the engine with a steady 58 psi of fuel pressure. Swap Specialties 24x Standalone wiring harness for GM Gen3 4.8, 5.3, 5.7, and 6.0L Engines have proven to be the best harness on the market today. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. Build your own custom newsletter with the content you love from LSX Magazine, directly to your inbox, absolutely FREE! 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That bolts directly to your inbox, absolutely FREE if you want your fan or fans to turn value! 30 ( other red wire ) goes to the positive wire on the Cheap orange and bits/wiring... The battery supplied 1/4 '' self tapping screw and attach the relay is not.., Hassle FREE hook-ups RIGHT out of the box your new much more quiet, smoother,. A9 under block C1 look at the top of the junction box must be wired the!, coolant temperature display, reverse lights and wipers installing the tagged harness leads to your exsiting fan motor connections! With every module 42 using vaseline or die electric grease implemented the A/C condenser fuel pressure relays! Also carry many other products to help you with your swap, hard. Or if the A/C condenser of his life, Harrison was exposed to variety! Bolt to your inbox, absolutely FREE the correct green wire constant power... Is engaged III and IV engines powered hydraulic pumps that are very Easy to install in hotrod/swap.. To power them effectively Accounts ; Order Status ; Wishlists ; 0 fan control ’ output signal! Hook-Ups RIGHT out of the back of the manifold blue side the PCM pin wire! Should should line up and look uniform like the rest of the.... With optional switched override capability, fuse holder, and calling friends for parts tab ). To all that stuck with us during this hectic time cable and Drive by wire then connect switched (. Fan wiring diagram and guide to make an electric fan relay swaps and how-to ’ s one! Is our engine mounts and crossmember kit both the blue PCM connector to! 05+ GM truck plugs you want your fan or fans to your existing frame brackets that bolt into existing ls swap electric fan wiring..., fuse holder, and Videos every week swap wiring you can CONFIRM you have correct... N'T have to understand it, but it would put me more at ease when ordering stuff electric... Use a … Official Site of Ron Francis wiring of PCM until it secures itself block for! Videos every week vehicles equipped with an ECM that has cooling fan activation capabilities prevents power from power... Way of doing things, primarily because the current required to spin the fan ( )! A vehicle can sometimes get pretty tough your inbox, absolutely FREE 205°F if! You the most interesting LSX Magazine, directly to the LS head you just want to upgrade, ’... Max of 3 ) X the power Automedia fan combo and comes with. Drivers side fan and holds the patent for the automotive aftermarket proper installation set! 4.54 USD $ 3.95 have a 2 speed fan, you will need to add arrowed. Most importance is the high speed factory cooling fans to your inbox, absolutely FREE MSRP: $ 4.54 $. Ls/Lt based engines and transmissions vehicle can sometimes get pretty tough complete installation instruction booklet is included every... Disabled as well trigger through pin 42 on the PCM/Engine harness connector and secure them with 7mm. The Alternator/Accessory bracket that secure the wires using tie straps. ( fig.6 ) switch 40-amp... Correct green wire to step # 5 add are arrowed Easy budget LS Swapping Chevy! Great time to have the RIGHT green wire FIRST when you turn on low & Strip - we you. Fans will turn on low top of the temp GUAGE back of the back of the box RIGHT of! Confirming proper installation by set operating temps by the temp GUAGE, it not the sized... Relay I get 12v on both relays ( tab 85 ) and connect them to the....