deathlucky
New Member
I wired up my car thermo fans yesterday with 2 fans with 3 relays so there is a high and low speed. they are hooked from the ignition to the relay coils to the ecu as the wiring diagram shows in the workshop manual. but for some reason the ecu is not triggering the relays. i have tried earthing the wires that go to the ecu to the chassis and the fans work fine.
the plan is to run an engine temp sensor that changes resistance around 3k at operating temp and around 22k at room temp and have 2 switches hooked up 1 to turn on at about 2.9k for low speed and 2.7k for high speed has anyone got any ideas on how to make these switches
thanks
the plan is to run an engine temp sensor that changes resistance around 3k at operating temp and around 22k at room temp and have 2 switches hooked up 1 to turn on at about 2.9k for low speed and 2.7k for high speed has anyone got any ideas on how to make these switches
thanks