Re: 1940 356 Rebuilt and running but horn problems

Posted by BigKev On 2014/4/10 15:07:58

From the relay, a GRND wire should run up the steering column and hook to the horn button ring switch beneath the steering wheel.

A simple ground wire between the body and the GRND on the relay should validate the relay and horns are operational.

If they are, then the problem is the in GRND wire. A test light can be used to figure out where the problem lies. You can poke the GRND wire, right after it exits the steering box with, with the alligator clip of the test light connected to the non-ground terminal on the battery and then have someone press the horn button. If the test light illuminates, then the problem is between between that point in the wire and the relay. If it doesn't illuminate, then the problem is either the wire portion in the steering column, or the corrosion where the horn ring switch is. On my car the horn ring contact plate was rusty and had to be cleaned to get my horn operational again.