Ls Swap Fan Wiring

You can not directly connect pcm fan control wire to fans.

Ls swap fan wiring.

Psi sells standalone wiring harnesses for gm gen ii iii iv v ls lt based engines and transmissions. 30 other red wire needs constant 12 volt power from the battery. 86 gray white wire goes to the ignition switch. Photo courtesy street performance.

When you are doing a build with the ls family of gm engines the idea is to end up with a. 87 red wire connects to the positive wire on the electric fan. We are currently up and running and shipping from our new location. 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. Wiring harness and wiring guide gm ls series pcm ecm. In most cases people end up having the harness that came with their ls engine rewired. If you don t you have to head back to the salvage yard or take your chances on ebay.

Lt1 ls1 05 oem flex a lite universal street strip we have you covered. 85 black wire. You must use a relay. Make sure you grab the wiring harness from the donor car.

When doing an ls swap you have three options in integrating the engine wiring harness successfully. Fan controls 1 2 gm pcm s typically will control electric fans usually 2. It seems for many people that the scariest part of the modern engine swap is the wiring harness. Your 1 source for oem operated pcm controled and universal electric fan harnesses.

Wire it once and wire it right with painless. Looking for an affordable in stock plug and play wiring harness for your ls swap. Camaro and firebird ls swap. Some 2003 ls pcm s tach signal is not strong enough and needs boosted see this link.

You can buy a stand alone harness have a new harness custom built or rewire the harness that came with your ls engine. 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. Thank you to all that stuck with us during this hectic time. Exhaust and induction guide.