Ls Swap Dual Electric Fan Wiring

Most builders are familiar with fabrication techniques trouble shooting and parts swapping to make things work but electronics rise to a much higher level of complexity.

Ls swap dual electric fan wiring.

The pcm will supply the negative or ground signal to turn on fan relays. The wiring aspect of any ls swap is undoubtedly the most difficult. This applies to all transmissions that were originally used prior to the introduction of the ls platform around 1999. When the pcm triggers the two additional relays the same voltage flows through each electric fan motor.

In this way the electric fan motors are wired in parallel causing the fan motors to spin at high speed. Crank spacer is a bit of a misnomer. Looking for an affordable in stock plug and play wiring harness for your ls swap. Thank you to all that stuck with us during this hectic time.

Https amzn to 377klrp those fans fit perfect on 68 72 gm a body cars bu. We are currently up and running and shipping from our new location. Some 2003 ls pcm s tach signal is not strong enough and needs boosted see this link. You can not directly connect pcm fan control wire to fans.

So your th350 th400 700r early 4l60e early 4l80e etc will need to have one of these crank spacers. Electric fan guide 100 horsepower anybody can install in gen 3 ls. 87 red wire connects to the positive wire on the electric fan. You must use a relay.

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. 30 other red wire needs constant 12 volt power from the battery. Psi sells standalone wiring harnesses for gm gen ii iii iv v ls lt based engines and transmissions. Just an idea on how to wire up electric cooling fans for your vehicle cooling fans.

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. Your 1 source for oem operated pcm controled and universal electric fan harnesses. Wiring dual cooling fans. Upgrading to gen iii ls series pcm.

Lt1 ls1 05 oem flex a lite universal street strip we have you covered. With dual cooling fans there are two methods for wiring up the relay kit. 85 black wire.