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Ok ok - think this part (listed as GM #470386 according to the poster) could work as a direct swap (same era)...
I am not sure how to tell if I have options like seatbelt and headlight warnings... I have some old paperwork, but nothing that lists options. Would that be embedded in the VIN? Is that a thing to post VINs publicly in forums like this? Sorry all - getting the hang of this...
Ok ok - think this part (listed as GM #470386 according to the poster) could work as a direct swap (same era)...
I am not sure how to tell if I have options like seatbelt and headlight warnings... I have some old paperwork, but nothing that lists options. Would that be embedded in the VIN? Is that a thing to post VINs publicly in forums like this? Sorry all - getting the hang of this...
When you posted the Buzzer above it gave me a Group Number to reference.
So the buzzer number I was missing was the buzzer with Headlight Warning, found it.
77-78 With Headlight Warning or 79 W/O Headlight Warning Gr.2.195 GM # 377596
79-82 With Headlight Warning Gr.2.461 GM #14004971
I can't find a photo of the buzzer unit With Headlight Warning...
[QUOTE=bmotojoe;1602279256]
Yes, The buzzer unit 77-78 and some 79 used part number #377596 then the number was superseded to #14004971.
Although the Buzzer did advance in the circuit it was used as a replacement years 77-82.
I bought a new unit way back and later opened up the original and found the problem.
The photo on left is my repaired 77 original and the right photo is of the #14004971 unit both showing the mechanical set contacts between 1&2.
I believe Circuit #40 (Hot At All Times) somehow was back feeding just a small amount voltage and was the cause of the drain with the contacts fused with carbon.
The contact points are #2 Circuit #237 Seat belt warning light. [end QUOTE]
I guess I have to figure out if I have (or don't have) headlight warning capability (if I'm hurting for full functionality in this domain).
I know there is absolutely 0 room under the dash but do try to look for a connector with 2 wires, just like in Interpon photo post #14.
Lt.Green & a Orange
Yes, that is me but now I know there is a second buzzer part number and as far as I know it's number is NOT superseded...
Here you go,
Read through this.
Good Photo post #9
LINK: https://www.corvetteforum.com/forums...elt-light.html
Last edited by bmotojoe; Jun 18, 2021 at 02:16 PM.
Ok you guys gave me some bravery - I yanked it out just now.
And yes, I located a green and orange connector... The circuit board has a number stamp - circled it. Those two bent pins are touching (circled) depending on flow of electricity, that could be a short...
I haven't put power back to the system to see what effect it has yet...
I would pull up the electrical schematic for your 79 and see if this unit has a circuit going through it to provide power or ground to another component.
Just to be safe and so you don't end up with an open.
Last edited by OldCarBum; Jun 18, 2021 at 05:35 PM.
Safe to say no circuits will be interrupted by removing buzzer.
The Red arrows represent Connector #C122 Lt.Green & Orange Wires
The Lt.Blue arrows represent Connector #C123 That is the white 4 wire connector Buzzer is plugged into.
Red arrows: Lt.Green wire circuit 80 is a switched ground from the key in ignition switch.
The Orange wire circuit 40 is the Stop/Haz circuit and is hot at all times.
Lt.Blue arrows: White Connector there should be a pink/blk stripe wire circuit 39 from gauges fuse HOT when ignition is Start or On position.
2 black wires one is from the seat-belt switch circuit 238 and one is circuit 150 a common ground.
The Yellow wire circuit 237 goes to the seat-belt warning light.
Black arrow: LPS plug from Buzzer to Fuse Panel Switched and Fused.
Thanks for the reassurance! This is great... tremendous thanks again! Now I know I have pulled it safely, and that it won’t harm my system being gone while I contemplate my next move. Perfect.
