The Stovebolt Site Forums The Parking Lot Big Bolts Horn Wiring

All of the wiring for the horn on my 46 1.5 ton is basically gone can someone explain to me how to go about correctly wiring the horn in? My truck is almost completely finished!!

generic horn wiring involves 3 parts and 3 wires.

1. Horn switch assembly (horn button and contacts in the steering column normally).
2. Horn relay
3. Horn

The 3 wires are as follows:
1. One wire going from the horn switch assy to the relay, this provides the ground to the relay (to activate it)
2. Hot wire to the relay (hot all the time)
3. Hot wire going from the relay to the horn, this is only hot when the relay is activated by pushing the horn button.

If - ground, Hot is +, if + ground, then hot is -.

Like this:

http://www.pacificnorthwestspine.co...-How-To-Assemble-The-Circuit-To-Make.gif

Where is the correct location for the Horn on a 46 1.5 ton?

Left side of engine, on intake manifold.

I've got a 46 COE that I totally rewired,it has NO horn relay and the original horn works fine!

You don,t have to have a horn relay but it,s a good idea. All the relay does is reduce the current passing through the switch in the steering column. This should make the horn button last longer. It is a good idea to have a fuse in the circuit. Any circuit really.

A truck horn relay was not standard equipment until 1953.

Thanks guys, I've always wondered why mine didn't have one.

I thought it was supposed to mount in the intake manifold, but my horn has a flange mount made of a piece of flat stock with a bolt spacing of about 4 inches. Looks to be original as it looks like the rivets holding the mount to the horn look original. Anymore ideas?? on the fire wall facing forward maybe?

I bought this truck as a project truck half finished so simple tasks like this seem to be difficult sometimes

jdchevy,

Mount it where ever you want/can.

Horns get changed over the years.

Also, car horns sometimes mount differently than truck horns (in the same year).