I had noticed that the airhorns I had fitted (powered via a relay, switched using the original horn circuit and a fused power feed from the battery) had become somewhat lacklustre recently. However, now they don't tootle, peep parp or even squeak.
I have run a power feed to the airhorns to test them, and they appear dead
However, as well as this, I have discovered (using a working horn from a pal's stash) that there is no power at all on the original horn circuit, which is used to operate the power relay.
Can someone advise me on further investigation steps, before I give up and go to my citroen indy?
Cheers,
Ainslie