Another Horn Thread, need some help
67 Camaro, 327, Powerglide
Have a Grant steering wheel that came with car. The horn cap is wired. A wire going to ground to the center terminal in the horn button and a black wire that runs through the steering column attached to the terminal on the outer edge of the back of horn button.
I probed that black wire for continuity to the small black wire attached to horn relay, no continuity. IDK if it is the same wire but its the only small black wire attached to relay coming from the car wiring harness that feeds horn relay, voltage regulator, headlight.
Wiring harness is original is in very good condition. Car was a Arizona car and all wires are very pliable and color is good as is the tape wrapping the harness
I assumed the horn relay is bad so bought another one. No....but it did start to get hot quickly.
My ? is can someone verify the wiring to the horn relay by color to terminal. I "think" the black & green were reversed (ones that are female that slide over male flat pins). When I reversed them, as shown in pic, the relay stopped getting hot (don't know if that's because it already got fried). Still no horn so IDK if it fried the old relay and then new one when I plugged it in same way as old one was.
The connection now is large black wire screwed into terminal towards PS. Large Red wire next to that. Small green wire of the plug furthest away (closer to engine) from core support. Small Black wire plugged into pin closest to core support
Are the small black & green wires plugged in correctly?
My DVM just died so I need to get another for any further testing. I am getting +12v to the large Red wire
I have only had the car for a month and sorting little stuff like this out. While under the car trying to see WTF a oil leak is coming from I saw the ground ring for the starter solenoid that should be bolted to the upper tranny bolt just sitting there "touching" the oil covered bolt head. Surprisingly the car always started. Clearly whoever pulled tranny at some point failed to attach it. Its stuff like this that leads me to believe two wires "may" have been swapped on the horn relay.
The relay is a Delco "original" looking but IDK if its the "original one (51 years old)
I did see a thread recently of a guy showing a video on why the relays heat up. Something about a manufacturing issue on replacement relays but searching I did not find it and of the several "horn" threads I read I did not find specific color/terminal info for a 67 standard column
Last edited by SoCal805; Jan 12th, 19 at 07:42 AM.