Bit of a mechanical numpty here, hoping you guys might get me pointed in the right direction and save me an expensive trip to the local HD workshop.

The horn hasn't worked on my 04 FXDL since I bought it, although the guy told me it was working 'just a few weeks before' for rego, so hoping it's a minor issue - I've checked the wiring at the horn itself and it doesn't look as though power is getting through but not sure where to look from there, I don't have an owners or workshop manual.

I did check the fuse box and checked all of the fuses, they look fine - wondering if it might be a relay somewhere but not sure where to look and even less sure how to actually test a relay.

Any tips?

if you dont have any luck ,, stick this on the side of your bike !!!!

Haha, I think I'd rather not have a horn!

Good to see you have a  sense of humour ,, ,,, I found this link,,, not a harley , but may help you diagnose your problem .... You must have a multi meter to do the checks .....https://www.youtube.com/watch?v=CYh0J2MSiUA

are you sure horn itself works?

 

I know it's an old thread but how did you go?

This is a old thread ,, and very technical to !!!!

Date of OP's question is 20th June 2015 .. I would say, he has'nt had a horn since then ... Fuck off the multi meter,, and put a Viagra in the tank, that should do the trick !!!!!