One horn stopped working

[edb]

Hello all. This is a head scratcher. I have a 1972 E3 Bavaria. Totally stock. The right side horn stopped working the left works fine. I did all of the usual terminal cleaning, bench tested the non-sounding horn on a spare battery and it works fine. I attached a test light to the right side horn spade terminals and it shines bright when I press the horn.
Does anyone have any thoughts?

Here's pic. I'm finally winding up a 9 year restoration project.

 

[jmackro]

Perhaps it isn't properly grounded. If it bench tests OK, and the feed wire is hot when you press the horn button, there isn't much else left to go wrong.

 

[Arde]

I would swap left and right horns and see what happens.
Nice car!
PS: I thought nobody uses horns in MA.

 

[edb]

Everyone uses horns, no one uses directionals. It's considered a sign of weakness.

 

[bavbob]

I thought directionals are used to unlock the steering so you can turn, no? I mean we all put our signals on while making the turn, never before. The point is to not communicate to others what we are doing.

1+ a poor ground as the cause.

 

[edb]

Solved. I swapped the horns Right to left and vice-versa and they work now. Go figure ....

 

[jmackro]

If the horns ground through their mounting studs, I can picture how disassembling/reassembling might revive an oxidized ground connection. It may re-oxidize in another 50 years, but ....