Fan wiring harness

Wed Feb 23, 2011 12:59 pm

Hi guys here's a little wiring schematic i've just drawn up for my electric fan. If any of you are electrically competent and could cast an eye over it for me and suggest any alterations or improvements that would be most helpful. Alternatively if someone could actually tell me if it will indeed work at all that would also be great!

Thu Feb 24, 2011 10:19 am

no one???

Thu Feb 24, 2011 12:20 pm

FWIW Boomer, I'm following this with interest. Very useful if confirmed.

Sat Feb 26, 2011 10:54 pm

Yeah, i'm keen to have this setup but doesn't look like anyone else knows how to do it either

Tue Mar 08, 2011 10:04 pm

I'm subscribed too, as I'm doing a m52 conversion and would like the fan to work at both speeds. I'm surprised brian mooore hasn't been along yet.
I had a search a while ago and found a few threads in which they describe how to use the factory wiring and spaces in the fuse box, i'll have a look tomorrow to see if I can find the threads...

Fri Mar 11, 2011 6:23 pm

I don't think that's going to work. Is the SPDT relay ever going to see 12v across it ?

As soon as the fan starts running, you won't have enough potential difference across the relay to get it to switch. You also can't run the high current circuit of the fan through the relay coil. It'll cook itself.

Ian.