Question about brown wire for tach, 69 - Team Camaro Tech
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post #1 of 9 (permalink) Old Oct 11th, 09, 04:09 PM Thread Starter
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Question about brown wire for tach, 69

On 69's with factory tachometer, was the brown wire always routed as a stand-alone wire from the guage to the coil?...or was it at times part of the the harnesses (dash and engine) wrapped in the black tape?

Thanks!
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post #2 of 9 (permalink) Old Oct 11th, 09, 04:12 PM
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Re: Question about brown wire for tach, 69

AIM shows it separate from the main engine harness, but taped to the engine harness in several places. In other words, it ran with the main harness and was taped to same, but was not wrapped inside the harness. Make sense?

Eric
69 'vert project big block/TKO 600 RR
68 'vert driver RS clone -- gone!
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post #3 of 9 (permalink) Old Oct 11th, 09, 06:22 PM
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Re: Question about brown wire for tach, 69

mine are in the main harness .
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post #4 of 9 (permalink) Old Oct 11th, 09, 08:02 PM Thread Starter
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Re: Question about brown wire for tach, 69

That's why I'm asking. I have a factory tach car, but my wiring has been somewhat Bubba'd.

I have a mystery brown wire that's inside the harness tape. This brown wire exits the engine harness at the same location the wires to the coil, wiper motor, etc. The connector has been cut off. And I've traced this wire back to the firewall to the block.

Could this be the tach wire, though it's inside the harness, taped with all the other engine harness wires?

Please advise. Thanks!
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post #5 of 9 (permalink) Old Oct 12th, 09, 02:58 AM
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Re: Question about brown wire for tach, 69

pull the plug off the tach and connect an ohm meter to both ends .
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post #6 of 9 (permalink) Old Oct 12th, 09, 12:18 PM Thread Starter
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Re: Question about brown wire for tach, 69

Yeah, my next test was a continuity test. The problem is, getting to the back of the Tach. I'll let you know what I learn. Thanks for your help.
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post #7 of 9 (permalink) Old Oct 12th, 09, 12:22 PM
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Re: Question about brown wire for tach, 69

Looking at the AIM page for RPO U16, tach lead on engine harness side was as I stated earlier, separate wire secured to existing engine harness with pieces of 3 inch long tape, at four locations along the harness. Underdash harness looks like the wire got wrapped into the main harness close to the fuse box.

Eric
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post #8 of 9 (permalink) Old Oct 12th, 09, 03:50 PM
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Re: Question about brown wire for tach, 69

look again at the AIM U16 is the tach & center fuel gage that's why its shown with a separate wire going thru the firewall .U17 has the tach wire built in . U17 A1 the first page shows the tach wire coming out of the main harness . .http://www.camaros.org/options.shtml
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post #9 of 9 (permalink) Old Oct 13th, 09, 01:26 PM Thread Starter
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Re: Question about brown wire for tach, 69

That explains it. This car has the center fuel guage with the tach to the right. Thanks!
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