I do not understand 'gnd to metal'
The horn is bolted to metal, has one wire that brings 12v
Really. The last 'test light' I used was a spare motorcyle turn signal (to diag a 1947 Massey Harris tractor
). they all work, any 12v light you find.
The horn is bolted to metal, has one wire that brings 12v
Really. The last 'test light' I used was a spare motorcyle turn signal (to diag a 1947 Massey Harris tractor
). they all work, any 12v light you find.
