Ls Swap Fan Wiring

You can buy a stand alone harness have a new harness custom built or rewire the harness that came with your ls engine.

Ls swap fan wiring.

Some 2003 ls pcm s tach signal is not strong enough and needs boosted see this link. Your 1 source for oem operated pcm controled and universal electric fan harnesses. 86 gray white wire goes to the ignition switch. Lt1 ls1 05 oem flex a lite universal street strip we have you covered.

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. You can not directly connect pcm fan control wire to fans. You must use a relay. When you are doing a build with the ls family of gm engines the idea is to end up with a.

Photo courtesy street performance. Make sure you grab the wiring harness from the donor car. Psi sells standalone wiring harnesses for gm gen ii iii iv v ls lt based engines and transmissions. We are currently up and running and shipping from our new location.

Wiring harness and wiring guide gm ls series pcm ecm. If you don t you have to head back to the salvage yard or take your chances on ebay. Comparing gen iii controllers crankshaft guide for building big inch ls engines camaro and firebird ls swap. 87 red wire connects to the positive wire on the electric fan.

Official site of painless performance american made wiring harnesses for your hot rod street rod muscle car off road and everything in between. It seems for many people that the scariest part of the modern engine swap is the wiring harness. 85 black wire. Thank you to all that stuck with us during this hectic time.

Chassis and suspension stroking options for big inch ls engines how to control your gen iii 3 v 8 ls engine ls swaps. When doing an ls swap you have three options in integrating the engine wiring harness successfully. 30 other red wire needs constant 12 volt power from the battery. The dlc or obdii port is a must have for any ls swap and it is often overlooked when retrofitting a stock harness.

Looking for an affordable in stock plug and play wiring harness for your ls swap. The pcm will supply the negative or ground signal to turn on fan relays. Fan controls 1 2 gm pcm s typically will control electric fans usually 2. Exhaust and induction guide.