I'm trying to figure out why the horn has never worked since I've had the car. Need it to work to pass inspection. Ran a jumper wire from pos bat terminal to horn. Works fine. The green wire from the horn goes into the bottom of the relay. While looking at this wire - I found the big black wire from the screw on the left of the 1st pic goes into the dead space in the fender well and is terminated with black tape. What was this wire for? Why is it hooked to the horn relay but not to anything else? Here are pics: 1st one is the relay, 2nd one is the wire I'm talking about, and 3rd one is my alternator just so you know what it is. I'm not good with this stuff - and I need to figure out how to get the horn to work.....