I ordered a multi-meter which should be arriving today. My wife is traveling this weekend so I should be able to spend most of Saturday and Sunday tinkering with the car.Theoretically you "could" check for power anywhere along the wire but you really should check at the connector.
If there is no power there trace the wire back and look for breaks/damage.
If you have a cut or something in the wire you could splice in a new piece of SAME gauge wire with solder and shrink wrap.
Clicking is usually a good sign of a functioning relay.
Circuit could be damaged anywhere.
Keep at it you'll figure it out !
I also ordered a few other small miscellaneous things that I had been wanting to put on the car - upper radiator brackets, arm rest plugs (two are currently missing), red "mustang gt" insert decals for the rocker panel area, and a K&N drop in filter for the stock airbox. Obviously the horn is the priority but I'm excited to get some small pieces to the car as well.


















