67RT
Bronco Guru
- Joined
- Jan 17, 2014
- Messages
- 1,308
Hi,
I am troubleshooting a dead horn (never worked). All other electricals work on car except dash lights, and that may just be a bulb. Turn signals and hazards function properly.
I bought a good horn and verified a honk when I hook it up to battery power and ground. I have no power at blue/yellow wire at horn when pressing horn button. I am chasing it back thru the column. From what I have read, contacting the two copper contacts on springs should close circuit and give me 12v at the horn. It doesn't although it does read 12v on the meter. When I jumped the hot copper contact to the center nut on column I got sparks and briefly some smoking wires from within. I am thinking that the hot wire is open in the column and shorting here. Any thoughts?
So to fix it I need a new turn signal switch, which also includes the horn contacts?
Mine is a 1970 so there is no relay. Everyone seems to think I should install one. Is that the case? If so, I will try to follow the thread below. Seems tricky..
http://classicbroncos.com/forums/showthread.php?t=249877&highlight=horn+relay
I am troubleshooting a dead horn (never worked). All other electricals work on car except dash lights, and that may just be a bulb. Turn signals and hazards function properly.
I bought a good horn and verified a honk when I hook it up to battery power and ground. I have no power at blue/yellow wire at horn when pressing horn button. I am chasing it back thru the column. From what I have read, contacting the two copper contacts on springs should close circuit and give me 12v at the horn. It doesn't although it does read 12v on the meter. When I jumped the hot copper contact to the center nut on column I got sparks and briefly some smoking wires from within. I am thinking that the hot wire is open in the column and shorting here. Any thoughts?
So to fix it I need a new turn signal switch, which also includes the horn contacts?
Mine is a 1970 so there is no relay. Everyone seems to think I should install one. Is that the case? If so, I will try to follow the thread below. Seems tricky..
http://classicbroncos.com/forums/showthread.php?t=249877&highlight=horn+relay