Those are the wires, but I really don't like the way that my '52 GMC (and I assume your '50 Chevy) implemented them. One wire connected between the horn and the battery terminal at the stomp starter switch. The other wire left the horn, went up through the steering column and when you mashed the horn button you provided ground. No fuses and all the current through the horn button contacts. Sounds like a fire waiting to happen.



I put a fuse in the line from my battery terminal at the stomp starter and ran the other end of that wire to a generic horn relay I found at FLAPS. Here's one on Amazon:
[img]https://www.amazon.com/ACDelco-U173...Horn+Relay&qid=1654046836&sr=8-5[/img]

A picture is worth 1000 words. If it doesn't make sense let me know. If you are still running 6 volts you'd need to find an equivalent 6v relay. I'd run a 20 amp fuse.
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Last edited by Bill Hanlon; 06/01/2022 1:52 AM.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.