Horn wiring

[Richard_G]

A question for u guys. Need answered as im trying to do this today.. The standard horn has blue n brown. Which 1 is live? Also cld I piggyback onto these wires with a small compressos horn without another relay. The factory horn has 1.

this is n a fresh iveco daily

any help wld be appreciated
thanks

 

[Panky]

I wouldn't run the wire direct though a compressor as the original wiring (and fuse) wouldn't be rated for it as a compressor would draw a lot more current than a switch wire operating a relay. Every compressor/air horn kit I've seen have a relay and a change over switch so you can use either the air horns or the original horn.