My horn recently stopped working on my 2005 LC s9. I tried to adjust it, it would only click, but with no success. So I swapped it with a spare I had lying around. The wiring setup was different. The original had only one wire running to it and grounded (?) at the mount. The other has two points for wires to connect and wouldn't ground to the mount with out a jump wire from the second, unused connector.
It worked like a charm, but while out, sitting in traffic, the engine just stopped, had no power. The power would return when I cut the key off then back on. It would run until I hit the turn signal, then immediate death.
Last time I had this problem was when I wired the led running lights improperly, but since rewiring I have not had a problem. Until the horn change... Just to keep it going to get home I disconnected the horn and led's.
Any advice, short of just a handlebar mount air horn?