'62 Grand Prix horns
Hi all,
I'm rewiring my 1962 Grand Prix and have created a small problem for myself. I need help reconnecting the horns. The primary horn has a green wire that connects to the relay, and a black ground wire. The secondary horn has only one connection. Does it connect to the same green wire? There's no provision for it on the green wire to the primary. A good description and a pic would sure help. I have the shop manual, and a blown up copy of the electrical system, but it hasn't help answer the question. Thanks! |
No.
Black wire to horn and other horn. (I don't see a green wire in diagram?) Brown should go from horn switch (on steering wheel?) to the relay. Black from relay to 1st horn and to 2nd horn. Big power wire (red? could be green possibly? shows a yellow there also) from battery to power side of relay. :) |
Sounds to me like the "primary" horn depends on one of the terminals for a ground while the "secondary" just depends on the frame of that horn being attached to a good ground.
I've never heard of the horns referred to as "primary" or "secondary". One is usually a high tone while the other is a low tone. Together they sound like a typical 60s GM horn. Follow both wires on the "primary" horn and you will probably find that one goes to ground nearby. If so, the "secondary" horn's one wire should be connected to the other (non-ground) wire on the "primary" horn. Just for giggles, disconnect the ground wire on the "primary" horn and see if it still works. If it does, the ground wire is kind of a "belt and suspenders" arrangement to guarantee the "primary" horn has a good ground. |
By the way, the 1962 Catalina wiring diagram on John's web site does not show horns with two terminals. Both horns are grounded by the horn's frame. My guess is that the "primary" horn has been replaced at least once since 1962.
Diagram here http://www.wallaceracing.com/MWire5765-335.jpg |
More horn info/pic
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Back to the horn....you can see a male connector on the green wire and the black wire has an eyelet that was connected to ground. Not sure where this horn came from before installation to the GP. Tried to research a number on the horn, but Delco Remy's parts look up doesn't even list Pontiac as an option. I think I'll just order a new horn and eliminate this one. Thanks again. |
Hi Bill,
You are correct about low note/high note, but I didn't have a catalog or manual in front of me when I posted and I was just trying to distinguish between the two. The diagrams also show horns on the left and right side, and both of mine are attached to the inner fender well, under where the battery would normally be. The fella that restored the car moved it to the trunk. |
Your 2 wire horn is definitely not an original horn. Probably a universal replacement.
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