Ls Swap Electric Fan Wiring

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Ls swap electric fan wiring.

It seems for many people that the scariest part of the modern engine swap is the wiring harness. When you are doing a build with the ls family of gm engines the idea is to end up with a. Your 1 source for oem operated pcm controled and universal electric fan harnesses. When i measure voltage at the relay i get 12v on both sides of the coil.

87 red wire connects to the positive wire on the electric fan. 30 other red wire needs constant 12 volt power from the battery. 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. I am working on a ls swap and i cannot get the cooling fans to work.

Lt1 ls1 05 oem flex a lite universal street strip we have you covered. We are currently up and running and shipping from our new location. The first part of the installation is to install the electric fan to your radiator and remove the mechanical fan. You can not directly connect pcm fan control wire to fans.

The fan s are triggered via a temperature switch and 40 amp relay combination. Some 2003 ls pcm s tach signal is not strong enough and needs boosted see this link. 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. 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.

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. The pcm will supply the negative or ground signal to turn on fan relays. 86 gray white wire goes to the ignition switch. In this way the electric fan motors are wired in parallel causing the fan motors to spin at high speed.

Also included is an easy to follow wiring diagram. The pcm is sending a ground signal to the relay but the relay is not activating. You must use a relay. 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.

When the pcm triggers the two additional relays the same voltage flows through each electric fan motor. 85 black wire.