I would like to hook up a switch to my auxilary fan so that I can turn it on whenever I feel the engine is running too warm, not the computer. But, I also want to maintain when the fan currently comes on - with the AC, when the temp is too high - for when I am not driving it, etc. Will running a wire and switch from the battery to the power wire of the fan cause any damage to the computer? What gauge wire and what size fuse would be needed for this?
Thanks
Thanks