It is a 3 x 3 x 1 rectangular box which plugs into a connector just to
the left of the fuse panel, at the driver's left foot. Whenever my horn stops
working, I have to jiggle this black box, or the smaller white box next to it,
to reactivate the horn.
Must be a loose connection in there. How can I tighten it up without ruining
it? Do I need to buy a new black box ?
The car is a 1985 Chevy Caprice