The relay is powered up and activated thanks to a small electrical current. When it is activated, it lets a current that is much bigger than the original one flow through other two outlets. It is used to control the headlights, the rear fog light, the electric fan, etc.
After replacing the lock cylinder and having a brand new key made and programmed everything comes on it's working right now it laying all that stuff but it won't start now and it was sitting for maybe a month and a half now there's a shot that looks like a relay on the fender like most Fords an old big one and I took a couple of wires off of that that didn't look like they were attached too much of anything I can't remember being on anything and maybe the problem but I'd like to hear from some new people out there maybe you got a better idea on what maybe is happening here thank you for your time if you will get a chance to drop me a line thank you bye