The car (HC) failed iits MOT today on one thing the horn not working. On the one hand really pleased on the other annoyed as I cannot get he blooming thing to work. I have taken the horn off and run it straight of the battery and it works fine. I Then tested the +ve feed to the horn this is showing 0V when the shorted to earth and the horn switch depressed.
Is there a fuse/relay in this circuit?
he other thing to note is the indicator/horn is not functioning correctly and will not click/stay between high and low beam. Could this be the culprit? The wire colour at the horn is purple with a stripe. There are several purple wires at the bottom of the stalk.
Hope that lot made sense