I'm looking for a source of a 67 Horn Relay. ( Pirkle has none.).Thanks! Al W.
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Re: 67 Horn Rlay
Allan------
They show up from time-to-time on eBay. Otherwise, this is an item that was not a unique-to-Corvette piece. You will find them on just about all 1966-71 Chevrolet passenger cars. They're also found on many 1966-71 Pontiac passenger cars. So, if you really want an original piece, the bone -yards might just have one waiting for you.In Appreciation of John Hinckley -
Re: 67 Horn Rlay
The problem with the '66-67 horn relay, 1115837, is finding a used original who's plastic insulation is intact. They used a white translucent plastic to surround the bottom terminal lugs and wrap around the lower outside of the relay. With heat, UV and age, this plastic turns yellow, becomes brittle and cracks. This puts you on the teeter totter of originality vs. condition point deductions on the judging field.
Good used originals that can be cleaned up, replated, and made to look like new are hard to come by! Most scrap yard cars sit with their hoods open and the elements 'beat' the horn relays that are there...Comment
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Re: 67 Horn Relay Usage
Joe - I'm a little curious about the usage period of 1966 to 1971 indicated for the 67 horn relay, i.e. p/n 1115837, especially for Chevrolet passenger cars. My experience is while the various horn relays were used across the Chevrolet Division vehicle lines depending on production year, the p/n 1115837 horn relay application was for the 1966 and 1967 production years and then a different horn relay, p/n 1115862, was used in 1968 and early 1969; p/n 1115890 in 1969 late and 1970, and p/n 1115889 in 1971.
As for the Ponitiac applications, I guess I'd better be looking at the Pontiacs more closely when I'm out junking.
PeteComment
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Re: 67 Horn Relay Usage
Pete-----
Yes, you're correct. The PRODUCTION use of the GM #1115837 relay was limited to 1966-67 across most of the Chevrolet car lines. I expect that the Pontiac usage was the same, but I don't know that, for sure.In Appreciation of John HinckleyComment
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Jack, how would you rate this junkyard 837-12V
Is the plastic good enough for a restoration candidate ?
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Re: 67 Horn Rlay
Chicago Corvette sometimes has restored 67 horn relays. You might try giving them a call.
By the way, while the 66-67 horn relays were the same part number, there was a tooling problem or something that caused the steel covers of the 66 horn relays to have a "split" going through the two fold-over tabs on the ends. The split typically extended part way up the sides of the cover. Some time around the start of 67 production, the splits disappeared.
So, if your car is not an early 67, the horn relay should not have the split in the tabs. If it is an early car, I think either type would be acceptable to most judges.Comment
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Re: Horn Relay Cover Tab Split
Joe - I don't think the split tabs in the horn relay covers is a tooling problem. I think you'll find it was there by design, although I don't know why. Fact is you'll find most if not all of the original horn relay covers prior to 1966 had the split tabs. My experience is that there is no pattern to presence of the split tabs in 1966 and 1967 horn relays and by 1968 production you don't find the covers with split tabs. PeteComment
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Re: Jack, how would you rate this junkyard 837-12V
Picture concentrates on the BOTTOM of the horn relay and the plastic typically cracks across the top of the side B+ bar. If it's NOT cracked there, then it CAN be saved/restored...
You GENTLY clean with soap/water and a tooth brush, then apply masking tape to the outside of the plastic and GENTLY media blast away the heavy oxide. Next, take it for a 'swim' in pickling bath to remove the old plating being careful NOT to immerse the top half of the relay.
Using very thin gauge wire, electrically connect the lower terminals to the rear mounting plate and the front B+ buss bar. Now, immerse the relay with the upper cover removed in your home plating tank keeping the upper exposed portion of the relay OUT of the plating electrolyte and lay down fresh new plating.
Do the cover and side plate screws + washers separately for plating. Carefully remove the masking tape covering/protecting the plastic insulation and re-assemble the upper cover + side plate screws & washers and you're done!Comment
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Re: Horn Relay Cover Tab Split
The 'splits' allowed the relay to 'breath' as there was no sealing gasket between the cover and the base...Comment
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Re: Horn Relay Cover Tab Split
Hi Pete:
I agree that the cause of the splits is not known, and it is just my theory that it was a tooling issue. I have seen a wide variation in how far up the sides the split appears, and the appearance of the split looks more like an unintended effect than one that was intentional. I have simply guessed that it had something to do with the process and the tool used to form the cover from a single piece of steel.
Regarding the phase-out of the split, I have been told that it should not appear on 1967 covers, and I know judges who will make a deduction if they find the split tabs on anything but a very early 67. I believe this view is widely held, but maybe these judges have it wrong.
I don't have much direct experience on this subject from observations of original cars. My April 67 car does not have the split tabs, but that is just one car from the middle of the production year. I've looked at quite a few other original 67s, but I never thought to look at the horn relay covers on those cars. I'll have to add that to my list of things to check.Comment
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Re: Horn Relay Cover Tab Split
Joe - I think we're dealing with "urban legend" on the horn relay cover tab split, so it's one of those "pick your poison" things if you believe the one on your car is original or maybe it would be better to "pick your judge" in the case of the horn relay cover!!!!!!!!!!!!!!!!!! You've got to love this hobby. PeteComment
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Re: Horn Relay Cover Tab Split
Hi Pete:
I'm in good shape with my April 67 car because my horn relay does not have the split tabs, which is the configuration that the "urban legend" calls for. For someone who is seeking to acquire a horn relay for their 67, I was simply passing along what I have been told by some other judges regarding they way they judge the split tabs. I have not seen enough known-original 67s to form my own opinion on the split tab question.Comment
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Re: Horn Relay Cover Tab Split
Joe,
I believe our 67's were on the production line in St.Louis on the same day in April 1967. (15629) My horn relay also does not have the split. I have two restored spares...one with the number 837 and the other is 824. Anyone know the correct applications?Comment
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Re: Horn Relay Cover Tab Split
Rick - The 824 was used in 1963 to 1965 production and the 837 was used in 1966 and 1967 production across the Chevrolet product line except trucks and Corvair. The 837 was also used on the 1967 Firebird. PeteComment
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