Ls Swap Fan Wiring

When doing an ls swap you have three options in integrating the engine wiring harness successfully.

Ls swap fan wiring.

30 other red wire needs constant 12 volt power from the battery. Some 2003 ls pcm s tach signal is not strong enough and needs boosted see this link. When you are doing a build with the ls family of gm engines the idea is to end up with a. The pcm will supply the negative or ground signal to turn on fan relays.

Comparing gen iii controllers crankshaft guide for building big inch ls engines camaro and firebird ls swap. It seems for many people that the scariest part of the modern engine swap is the wiring harness. Make sure you grab the wiring harness from the donor car. You can buy a stand alone harness have a new harness custom built or rewire the harness that came with your ls engine.

In most cases people end up having the harness that came with their ls engine rewired. Fan controls 1 2 gm pcm s typically will control electric fans usually 2. Your 1 source for oem operated pcm controled and universal electric fan harnesses. You can not directly connect pcm fan control wire to fans.

Lt1 ls1 05 oem flex a lite universal street strip we have you covered. Official site of painless performance american made wiring harnesses for your hot rod street rod muscle car off road and everything in between. The dlc or obdii port is a must have for any ls swap and it is often overlooked when retrofitting a stock harness. Wiring harness and wiring guide gm ls series pcm ecm.

Exhaust and induction guide. 86 gray white wire goes to the ignition switch. Wire it once and wire it right with painless. We are currently up and running and shipping from our new location.

87 red wire connects to the positive wire on the electric fan. If you don t you have to head back to the salvage yard or take your chances on ebay. 85 black wire. Camaro and firebird ls swap.

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. Psi sells standalone wiring harnesses for gm gen ii iii iv v ls lt based engines and transmissions. Chassis and suspension stroking options for big inch ls engines how to control your gen iii 3 v 8 ls engine ls swaps. Photo courtesy street performance.