Additional dash switches?

[rick3000]

I am going to be setting up a switch to trigger the radiator fans using an OEM switch, using a latching relay. Particlewave helped me figure out the wiring in this thread: Defroster Switch Wiring The diagram is originally from Sandy on RennTech.

[AZ986S]

Another way to do it is to tap into the High Speed and Low Speed relay coil ground wires (pin 86) and use an ON/OFF switch to route to ground. That way you are handling low power controls. That's how I did it and a few others as well.

[rick3000]

Originally Posted by AZ986S

Another way to do it is to tap into the High Speed and Low Speed relay coil ground wires (pin 86) and use an ON/OFF switch to route to ground. That way you are handling low power controls. That's how I did it and a few others as well.

Not to hijack the thread, but thats what I'm doing with the fan relays, but I want to install an OEM switch to control the on/off function, which requires a latching relaying since OEM switched are momentary.

[Meir]

Originally Posted by rick3000

Not to hijack the thread, but thats what I'm doing with the fan relays, but I want to install an OEM switch to control the on/off function, which requires a latching relaying since OEM switched are momentary.

Are you looking for a relay to replace the OEM one, or adding an additional one between the new switch and he fan relay?