Horn does sometimes works, sometimes not

[rasmeidirt]

Found the problem, but not yet solved!!

Wait to check all components! The fuse is good, the horns, one behind the grill and the other one behind the right headlight (passenger side), are all good and no rust, surprised when test with the batter still louder with all these years. The relay is good with the click. The horn button and the clock spring are all good and the ground is also good.

The positive wire from the relay behind the glove box to the horn behind the right headlight was broken somewhere!!!

Mocking a separate wire to that space makes the two work.

Options to decide do I need to dig up the factory harness to find the broken wire or running a separate wire, which one is better???