Blue Chip

After someone wasn't paying attention and rolled back into the front of my (hornless) track car - I regret not having a horn any more.

Is there a way that I can jump the horn relay to a momentary switch on the dash as a good work around?

Simiar thought process to the radiator fan over ride switches.

Southernman

Assuming your horn wiring is still intact, add your momentary switch as noted above. Terminals 85 & 86 are the relay's coils and will activate the horn when energized. Be sure to add an inline fuse if you're not tapping into an already-fused circuit from the fuse box.

cds72911

I don't know what year your 996 is, looks like a 996.1.

Either way it looks the same - in the 2002 wiring diagram (pg. EWD-81 in the Bentley manual), the wires to and from the horn button are BN, and BN/WH. The BN/WH terminates at terminal 85, pin A2, of the 40A horn relay (relay panel 1, relay position 10). It looks like it is ground switched. It is the same for the 1999 wiring diagram (pg. EWD-43 for the switch and EWD-15 for where it enters the relay a terminal 85, pin 2).

It sure looks like you could just run a momentary switch with one leg to ground and another into that BN/WH wire, or direct to terminal 85 on the horn relay.