Euphoric

iTrader: (1)

Anyone install a set of Hella air horns? If so how did you wire the relay?!? I am stumped on where it says wire to the horn, the diagram says wire to 2 wires at the horn but the GS horn only has one wire in the loom/harness clip. What did you guys wire to?

***EDIT** I figured it out, please lock or delete.

JeffTsai

iTrader: (1)

Well you figured it out. But just incase anyone wasts to know in the future.

The one wire that's coming off of the harness going to the factory horn....that's the positive wire. The horn is ground to the chassis

Euphoric

iTrader: (1)

Yeah, I should have updated with the configuration that worked. The prong 85 on the relay is what had me confused since the instructions said that it went to a positive from the horn wire when in fact it needs to be grounded instead on the GS.

So at the relay -

Prong 30 goes straight to a 12v source
Prong 87 goes to the positive on the air horn compressor
Prong 86 wires into single factory horn wire
Prong 85 gets grounded

Works like a charm!