What is this wire harness?

[King M.]

I was hooking up the eight wire harness coming off the 1967 steering column and in addition to this harness there was another three wire harness coming down the column from the steering quadrant. I don't remember disconnecting it during the tear down. Any ways the three wire are light grey, brown and black with white trace and end in a curved three prong connector. Any ideas?

[King M.]

Re: What is this wire harness?

I said steering quadrant. I meant the harness comes out of the turn signal quadrant of the steering column and runs down the length of the column along with the eight wire harness. The end of the harness was laying on top of the steering column where the curved terminal block is.

[Bill L.]

Re: What is this wire harness?

Hi King:

I have looked and looked at the wiring diagrams and at my '67 but I can't find anything similar --- (Note: I did not take the column apart)..

The only thing I was able to find that is remotely close is that in the AIM UPC 12 / D3 page G243 in the wiring diagram it shows a three wire connector coming out of the curved connector --- it indicates that the three wire connector is for the traffic hazard switch (4-way blinker) ---- two of the three wires seem to have the color you indicated (brown, light blue or grey and white / no black-white indicated though) ....this is the only thing I can think of --- I did not find it my '67 so I am assuming here, that it is an internal connection? Maybe inside the column near the push / pull switch?

See the page view:

Screen Shot 2015-08-31 at 1.36.01 PM.jpg

Hope this helps a bit ---

Regards
Bill

[King M.]

Re: What is this wire harness?

Bill,
i saw that 4 wat flasher in the wiring schematics. The terminal in the picture is at the end of the wires on top of the pedals. I did not take the signal or flasher area apart on the steering column so all the wiring is as it was there.

[Bill L.]

Re: What is this wire harness?

OK that helps --- let me take a look and get back to you---

Bill

[Bill L.]

Re: What is this wire harness?

Here are two photos of the new and old wiring looms for my car --- I don't see any evidence of the smaller curved connector in either shot ---

I would have expected it to be a bit further up the loom from the large curved connector ----

Sorry this is not more helpful.....

New---

Screen Shot 2015-08-31 at 6.08.41 PM.jpg

Old

Screen Shot 2015-08-31 at 6.09.21 PM.jpg

[Donald H.]

Re: What is this wire harness?

I have the Dr Rebuild illustrated wiring schematics and there is no similar connector on the Dash Harness in these schematics.

Don

[Donald A.]

Re: What is this wire harness?

I have my steering column out so looked through everything last night and there is no 3 wire curved connector as in your picture. I could not find it in the AIM anywhere and it is not identified in the various wiring diagrams and photos I have. I then was thinking maybe it is for an option that I don't have, like speedminder, or AC or whatever, but none of those would be in the column. There is only one column connector and it services turn signals, horn and 4-way. It does not separate into any components. So the only thing I can guess at this point is that your connector in the photo is not original, it has been added by someone, for what reason, I have no clue. Perhaps you could trace it completely up to its origin in your column. If it goes to the turn signal switch area then it is a Bubba thing, or a different year switch or add-on thing. Would be very interested to find out where you trace it to, what those wires connect to up in your column!

[Bill L.]

Re: What is this wire harness?

Don:

My white '67 coupe has speed minder and that was one of my early guesses as well (It just seemed logical) --- but then I remembered that there is no real harness for the speed minder --- just an auxiliary orange line that runs from the back of the cluster to the fuse block (lower right side) --- just for power.

This one is a real puzzle --- I thought it might be the flasher connection but King states it is down near the pedals --- however -- the flasher can is inserted into the main fuse block at the top --- so maybe???

Probably something obvious we are just not seeing!!!!

King: Have you tested the basic functions of the turn signals, flashers etc etc to see what is NOT working??? I know that sounds like a fools errand but it just might reveal "something" --- this one really has me intrigued since I have had so many problems with my '67 electrically ---- EVERYTHING works at this point so I really would like to know what you guys find out regarding this mystery.

A real puzzle for sure!!

Regards
Bill

[King M.]

Re: What is this wire harness?

Thanks for replies. Bill no I can not check functions at this time the insturment panel is lying on the floorboard waiting to go back in place. The connector has an ear on either side of it where a female connector would lock on to it. I do not believe its a added piece since the installation is too "nicely" done. But, tomorrow I'll unplug the eight wire connector and ohm rack of those back to see if they go to the wires in question. My car options are limited to posi, tinted windows, m21, l79, am/fm radio and white wall tires not much else. So that throws that out. I'll let you know what I find

everything was working before I disassembled the car but I just do not remember unplugging this terminal. Quandary for sure!

[Donald A.]

Re: What is this wire harness?

An interesting question. Was thinking about this again tonight - no stock GM 3-wire connector coming down the column with the 8-wire harness that I know of or can find in any literature. The description indicates this unknown harness appears to arise from the turn signal area of the column. I'm guessing one of the wires activates the horn, another probably the 4-way hazard circuit. So maybe this is an old alarm system? A system used to be in the car (or may still be) that this 3-wire connector plugs into for access to horn and lights? So throwing out this guess while waiting to see what the OP figures out!

[King M.]

Re: What is this wire harness?

This is what I found. Both harness, the 8 and the 3, are attached to the turn signalimage.jpgimage.jpgimage.jpgthe light grey wire is actually a white wire. This had to have been made from the manufacturer of the turn signal.

[Stephen L.]

Re: What is this wire harness?

I don't believe your signal switch is an original 67 corvette switch. Attached is a photo of my original 67 Corvette switch assembly. Note that the assembly is molded completely of the pink plastic. Yours appears to be a combination of parts....

[King M.]

Re: What is this wire harness?

That was going to be my next question. If the switch was original. It is a Boyne unit marked BPM

[Donald A.]

Re: What is this wire harness?

That was going to be my next question. If the switch was original. It is a Boyne unit marked BPM

Well in my opinion you do not have a Corvette switch. From the earlier posts I thought it was a modified wiring like for something extra, alarm system etc, i.e. an added harness. From your pictures now posted I see that it appears to be a factory switch, but it is clearly not a Corvette switch. Searching the literature I find Boyne BPM switches were used in many GM cars. What I found interesting was that 67-68 Skylark/GS/Regal/GN/GTO/LeMans/Cutlass & 442 cars used a nearly identical switch to the one you have pictured (different color plastic but same connectors - 8 wire as is used in Corvette - and the additional 3 wire curved connector that you first posted about). Well the cars listed above all had "cornerning lights" which Corvette did not. I suspect someone put a 442 or whatever switch in your column to get it working, and the 3 wire connector was not needed - no cornering lights

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