Thread: Horn keeps blowing fuse in Defender

Hi there,

I have tried everything I can think of but I still keep getting a blown fuse when I use the horn. This fuse is for the clock, radio, interior lights and horn.

What I have done so far.

Replace horn switch (thinking it was faulty/arcing), try another horn, check wiring.

I have an additional horn fitted and I use a switch to select either the standard horn or the air horns. (for RWC can't have air horn in VIC, that's what I was told)

The air horn is wired to a relay and doesn't blow the fuse. Is the main horn supposed to be relayed?

Any other suggestions would be appreciated.

Originally Posted by jimbo110

What size fuse are you using?

You may need the "slow blow" type



But maybe 5 amps more than you are using now may do the trick........

Tried a 25 amp fuse and still the same problem.

What's strange is sometimes it will work for while and then Zap it goes at the most inconvenient time.

Will look for loose connections as mentioned.