Horny....

[sinto607276]

Horn relay? Mine doesn't have one and standard wiring diagram doesn't show one. Since horn only used for short periods you shouldn't need one as long as existing fuse rating is OK for whatever horn you stick on.  Only compressor driven air horns might need a relay

Tbh Jules-C, I was only surmising it would have one, but I never checked

But in the same thought, if your just wiring in another horn it should just be a straightforward plug in, due to anything that was needed would be within the original wiring gubbings etc but as you say, depends what sort of thing your puting in, air horns and the like.

My BMW had foccin relays for everything, guess that's what was in my head