Outer Limits 4x4 Board

ive put this in the general tech section also to cover all basis..

basically i have tried to connect a new horn. but i need to earth it somehow . just not sure how to do it..

im new to electrical side of things.

the new boss kit comes with one wire which i assume you plug into the new steering wheel wire which will opperate the horn.

the instrucitons suggest using a seperate wire which connects somewhere on the steering wheel then wedges back in between the steering wheel and the boss kit..

I hope that makes sense.

try it without putting the extra earth wire in. It shouldn't need it. Put it together and check the horn works.
if it don't, THEN start looking at putting in that extra wire.

Cheers
Matt