Ls Swap Electric Fan Wiring

Also included is an easy to follow wiring diagram.

Ls swap electric fan wiring.

You must use a relay. The first part of the installation is to install the electric fan to your radiator and remove the mechanical fan. When i measure voltage at the relay i get 12v on both sides of the coil. 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.

Lt1 ls1 05 oem flex a lite universal street strip we have you covered. In this way the electric fan motors are wired in parallel causing the fan motors to spin at high speed. 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 a series and voltage is reduced causing the fan motors to spin at low speed.

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. You can not directly connect pcm fan control wire to fans. 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. 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. 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. The pcm is sending a ground signal to the relay but the relay is not activating. I am working on a ls swap and i cannot get the cooling fans to work.

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. The fan s are triggered via a temperature switch and 40 amp relay combination. 86 gray white wire goes to the ignition switch.

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. Thank you to all that stuck with us during this hectic time. 85 black wire.

A complete installation instruction booklet is included with every module. 87 red wire connects to the positive wire on the electric fan.