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Wiring AC fans to AC switch??

Posted: Wed Jan 17, 2007 10:35 pm
by amshaw
Im thinking about wiring my fans to the AC switch.....Ive only ever had the fans come on once this time last year with 42dec and towing a camper....

I read somwhere they dont come on "On My Model, D1a 12/97" until coolent is at 100dec :shock:

Right or wrong I dont like this and rather them come on when ac is on, I will feel better knowing they are on :wink:

Do you think it would be an easy job for a DIY type, or better left to someone with more skills?

Or can sombody tell me in plain terms what I need to do please? I would need to do it over the weekend as we are leaving for Beachport Mon 1st thing....

Posted: Thu Jan 18, 2007 4:42 pm
by RangingRover
Well, realistically you should just need to track down the relay that turns them on, unplug the trigger circuit, and wire your own into it with a switch and a fuse (preferably!) to supply the power to kick the relay in.

However, manufacturer electrical circuits are never as simple as they should be.... If you can find the relay, pull it out and jump power across the main circuit to check that the fans come on. If thats the case, failing everything else you can put a little lead in on either side, and run it to your own repco/bursons bought on/off relay. The reason I say this is that not all relays work exactly the same, some switch circuits, some break circuits, and some complete circuits. Also be careful that the relay does not control other things - often one relay seems to be a link to a few other electrical items, which may not even be related!