Ls Swap Electric Fan Wiring

You must use a relay.

Ls swap electric fan wiring.

A relay kit our part number ccfkrl will include everything you need to properly wire up your electric cooling fans with the exception of additional wiring needed to complete all of the circuits. It seems for many people that the scariest part of the modern engine swap is the wiring harness. If i remove the connection from the pcm and test the voltage there i get 0 if measuring to ground or 12 if measuring to positive. Lt1 ls1 05 oem flex a lite universal street strip we have you covered.

Fan controls 1 2 gm pcm s typically will control electric fans usually 2. In this way the electric fan motors are wired in parallel causing the fan motors to spin at high speed. Thank you to all that stuck with us during this hectic time. Electric fan wiring for proper electric fan control when the a c is on the best pcm and calibration choice is 1999 2002 camaro firebird corvette.

You can not directly connect pcm fan control wire to fans. 87 red wire connects to the positive wire on the electric fan. The pcm will supply the negative or ground signal to turn on fan relays. Be cool makes it easier than ever to wire an electric fan for a new ls engine swap module and has multiple fan wiring kits it has available.

Some 2003 ls pcm s tach signal is not strong enough and needs boosted see this link. Also included is an easy to follow wiring diagram. We are currently up and running and shipping from our new location. 30 other red wire needs constant 12 volt power from the battery.

86 gray white wire goes to the ignition switch. The first part of the installation is to install the electric fan to your radiator and remove the mechanical fan. The pcm is sending a ground signal to the relay but the relay is not activating. 85 black wire.

Your 1 source for oem operated pcm controled and universal electric fan harnesses. When you are doing a build with the ls family of gm engines the idea is to end up with a. I am working on a ls swap and i cannot get the cooling fans to work. When i measure voltage at the relay i get 12v on both sides of the coil.

When the pcm triggers the two additional relays the same voltage flows through each electric fan motor. In these vehicles the pcm receives a 12v request from the control head checks the refrigerant pressure activates the compressor clutch relay and monitors the voltage on the compressor clutch to.