|
relays running off water pumps???????...........i'm gonna let that one go (water pump is a mechanical device)
the point of the relay is to provide the fans with enough current to operate properly. It's basically like a switch that gets a signal from a source (ie fan controller, toggle switch, ign switch)....and supplies high amperage power to the source (as in a fat ass wire ideally straight from battery) so you're not running ur fans off of a circuit that wasn't designed for such a high draw device.
this has been covered numerous times. try searching for fan controller, fan switch, or just google 5 pole relays. You should be able to figure it out
|