ignition feed source in engine bay

[Guest putputcar]

Hi, I 'm try yo hook up a switch for my tranny cooler fan. I need to know where's the closest ignition feed 12v is at. Or where ppl usually hook it up at for ignition 12v?

 

thanks

[JustGav]

Is your tranny cooler not tempreature controlled, ie it comes on a certain high temp. In which case you can wire it via a fuse directly to one of the feeds from the fuse box located in the engine bay.

 

You want to be careful wiring something like a fan into an ignition feed purely because of the current required by most fans..

 

What I would suggest doing, is perhaps run a wire from inside the car to a relay box in the engine bay which will then switch a battery connected feed. That way it is controlled by the ignition but you aren't running the fan directly off a low current ignition feed.

[TrickTT]

I took mine from the switched feed to the aircon fan relays which are under the n/s headlight.