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-   -   has someone put a relay on the aux fan? (http://www.peachparts.com/shopforum/showthread.php?t=255672)

lutzTD 06-28-2009 08:47 PM
has someone put a relay on the aux fan?
 
I would like to put a relay on the aux fan so it runs whenever the AC is on. I am thinking it should be simple enough to get signal from the pressure switch. anyone done this and have a wire diagram?

79Mercy 06-28-2009 09:05 PM
why dont you just tap into a hot wire, like the compressor clutch?

Graminal95 06-28-2009 09:05 PM
There is a relay in place already. All you have to do is ad a signal wire from the A/C clutch relay to the aux fan relay. I don't remember which ones they are but you can tell but turning on the A/C and waiting for the click at the relay.

I have added an electric fan in place of the mechanical fan and added MB relays to control the speed of the fan. I need to add a controller that turns on the A/C fan when I am moving less the 5 mph.

I bet someone will post the wiring diagrams for you.

lutzTD 06-29-2009 12:14 PM
Quote:
Originally Posted by Graminal95 (Post 2235309)
There is a relay in place already. All you have to do is ad a signal wire from the A/C clutch relay to the aux fan relay. I don't remember which ones they are but you can tell but turning on the A/C and waiting for the click at the relay.

I have added an electric fan in place of the mechanical fan and added MB relays to control the speed of the fan. I need to add a controller that turns on the A/C fan when I am moving less the 5 mph.

I bet someone will post the wiring diagrams for you.
so you think just jump the clutch relay on wire to the aux fan relay on wire in the relay box on the driver fender?


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