When i first bought the truck (going on two months or so now,) the horn wasn't working. I replaced the fuse (under the hood) and all was good.

Was driving on the FDR (a moving, dangerous parking lot of a highway in Manhattan) and held down the horn for about 2 seconds for an idiot that decided to jump in at the last minute. Stopped working.

Fuse blown. Don't want to replace it because obviously something is wrong there. Any diagnosis steps for this? I don't just want to throw a new horn set at the problem.

I'm about to look at the RAVE manual, but wanted to know if anyone else has troubleshot this?

-Anthony

 

I replaced my horns with a set from Hella. Same problem. Adding a relay cured the problem. You could add another relay to the circuit if you want.

 

replace your horn, a used set will cost $20 or so, the relay could be bad also.

 

horn buttons are bad, just get a new set.

 

I was trying to avoid simply replacing the horn and then, possibly, the buttons if something else is causing it. I would've sworn I read on here somewhere about jumping the relay or other point in the circuit to test/diagnose.

I guess the cost is so low replacing the horn set isn't a big deal (and looks like a simple bolt on/off swap.)

-Anthony

 

horn buttons cause the issue more then the horns themselves. Besides if you suspect the horn yes you can jump the relay but it won't reveal which one is bad.

if you want since it doesn't always blow run two inline fuses in both of them.

you will know one is blown by the noise it makes. Plus it the main one blows again it will be the switch.

 

I bet your cruise control also stops working, this seems to happen when the horn stops working

 

Because they are on the same fuse.

 

Yup - I assumed they were on the same circuit because there's only one fuse out and all of my vacuum hoses are good.