Mysterius wires - Team Camaro Tech
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post #1 of 7 (permalink) Old Jul 29th, 17, 10:22 PM Thread Starter
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Mysterius wires

Hi everyone,
On my 67 vert with new AAW harness ordered for RS package, front disc brakes, console with guages, 4 speed and 327cu in I have two wires I cannot figure where they go.
There are coming from harness that exits fuse box right behind and below brake booster on the engine side of firewall along with the tan wire that goes to the brake equalizer. They are a light blue and a brown wire terminating in a T shaped push on connector and are just a bit longer than the tan wire. The two wires also have a grommet the size of a fifty cent piece about half way down the length.
It actually looks like it is meant to reenter the firewall back into the dash area but I can't see them doing that, but why the grommet.
Any ideas folks?
PS everything is wired and/or accounted for in the wiring harness

Steve

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post #2 of 7 (permalink) Old Jul 30th, 17, 05:00 AM
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Re: Mysterius wires

Are they separate wires, or together?
Each wire has a T-connector?
You disconnect battery and measure ohms to ground?
You measured voltage with IGN key in what position?

My guess is tan is BRAKE light wire to equalizer under master cylinder?
Blue wire for _________?

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post #3 of 7 (permalink) Old Jul 30th, 17, 06:14 AM
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post #4 of 7 (permalink) Old Jul 30th, 17, 07:01 AM
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Re: Mysterius wires

I don't know if I understand your description that well, How long is the wire run, and how far along is the grommet?
I assume your car is factory RS and you are not in the middle of a conversion to RS. So If an original factory RS, then this is the headlamp doors "control signaling circuit" light blue and brown wires to the original style relay/limit switch board.

In the diagram below the control circuit wires exit the firewall together, and that is where the grommet is used on the firewall. The routing out to the boards taped to the bulkhead connector looms, shows on the 1967 AIM page 428 that they exit the firewall next to the bulkhead connector. I can't locate my copy of the 67's firewall piercing map for the exact hole but think it is the same one used for vacuum hoses for the 68-69 headlights. I'm not real familiar with 1967 electric headlight boards only looked at them, never played with them.

I have attached the extract of pages 10-11 and 12 from the 67 68 69 RS wiring manual which deal with 1967 wiring and troubleshooting, and a blow up of the wiring diagram, and a copy of the the page in the AIM but look at your paper copy for better details.
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Name:	Chevy Camaro - 1967 headlight door circuit diagram.JPG
Views:	30
Size:	70.0 KB
ID:	189073   Click image for larger version

Name:	1967 AIM page 428 Z22 B8 RS Headlight Door wire routing.JPG
Views:	28
Size:	95.2 KB
ID:	189081  
Attached Files
File Type: pdf 1967 page 10-12 Extraction from 67 68 69 RS Wiring Diagrams and headlights.pdf (619.3 KB, 6 views)


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post #5 of 7 (permalink) Old Jul 30th, 17, 07:12 AM
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Re: Mysterius wires

Found the 67 firewall map photo. Hole number 1, left and slightly above the top of the taped up bulkhead connector in this photo, is the RS Headlight Door control circuit hole.
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Name:	Firewall 1.jpg
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Size:	110.6 KB
ID:	189082  


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post #6 of 7 (permalink) Old Jul 30th, 17, 08:45 AM
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Re: Mysterius wires

Quote:
Originally Posted by thewebb1 View Post
Hi everyone,
On my 67 vert with new AAW harness ordered for RS package, front disc brakes, console with guages, 4 speed and 327cu in I have two wires I cannot figure where they go.
There are coming from harness that exits fuse box right behind and below brake booster on the engine side of firewall along with the tan wire that goes to the brake equalizer. They are a light blue and a brown wire terminating in a T shaped push on connector and are just a bit longer than the tan wire. The two wires also have a grommet the size of a fifty cent piece about half way down the length.
It actually looks like it is meant to reenter the firewall back into the dash area but I can't see them doing that, but why the grommet.
Any ideas folks?
PS everything is wired and/or accounted for in the wiring harness

Steve

Steve, w
hat Jerry told you is spot-on! You need to order the CA71830 RS diode harness from AAW. It goes in series between the dimmer switch, ignition switch and that 2-way connection.


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post #7 of 7 (permalink) Old Jul 30th, 17, 11:39 AM Thread Starter
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Re: Mysterius wires

Jerry nailed it. I was puzzled by the grommet but it all makes sense now.
It is a conversion. When I ordered the wiring harness years ago, I ordered it with the RS stock wiring but have since used Retro-Electro on my RS/SS and liked the simplicity of their hook-up so I"ll use them again. No need for the relays or diodes to rely on.
Thanks for all the input and the diagrams and photo was handy too.

Steve

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