Ls Swap Fan Wiring

You must use a relay.

Ls swap fan wiring.

Chassis and suspension stroking options for big inch ls engines how to control your gen iii 3 v 8 ls engine ls swaps. We are currently up and running and shipping from our new location. 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. Looking for an affordable in stock plug and play wiring harness for your ls swap.

In most cases people end up having the harness that came with their ls engine rewired. 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. It seems for many people that the scariest part of the modern engine swap is the wiring harness.

Comparing gen iii controllers crankshaft guide for building big inch ls engines camaro and firebird ls swap. If you don t you have to head back to the salvage yard or take your chances on ebay. The pcm will supply the negative or ground signal to turn on fan relays. 86 gray white wire goes to the ignition switch.

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. Fan controls 1 2 gm pcm s typically will control electric fans usually 2. Wiring harness and wiring guide gm ls series pcm ecm.

Camaro and firebird ls swap. When you are doing a build with the ls family of gm engines the idea is to end up with a. You can not directly connect pcm fan control wire to fans. Thank you to all that stuck with us during this hectic time.

87 red wire connects to the positive wire on the electric fan. The dlc or obdii port is a must have for any ls swap and it is often overlooked when retrofitting a stock harness. Psi sells standalone wiring harnesses for gm gen ii iii iv v ls lt based engines and transmissions. 85 black wire.

Exhaust and induction guide. Photo courtesy street performance. Lt1 ls1 05 oem flex a lite universal street strip we have you covered. Wire it once and wire it right with painless.