When I push the horn ring I get nothing.  I pulled the ring and shorted the wire to the ourter mental and still got nothing.  There are 3 wires on the relay, when I short the middle to the one closer to the firewall the horn sounds.  The other wire seems to be nothing...

Can anyone tell me what the 3 wires are attached to or what they do?  Also what other things can I do to test other areas or connections?

Thanks

Andrew 56-Vicky