Tic-toc-tach wiring (repo) - Team Camaro Tech
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post #1 of 6 (permalink) Old May 25th, 09, 11:34 PM Thread Starter
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Tic-toc-tach wiring (repo)

I looked for this info for a couple of days and couldn't get a clear picture so I thought i would post my wiring. I have a Painless harness and purchased an aftermarket tic-toc-tach for my '68 because it looks good and is also cheaper then changing both the speedo and tach. I also purchased a new printed circuit board. There were no wiring instructions with the tach. So I hooked the purple tach wire to the isolated post in the 4 o'clock position and the other end to the negative side of the coil. Result - clock only works when the key is on and the tach registers about 1K depending on the accessories that are on, lol. Time to figure out what’s what.

The first picture shows the green temp gauge wire that was basically passed through the pin location where the tach wire for the coil should be. I cut it and attached the purple wire from the negative coil post. The water temp gauge wire is joined back together and crimped, soldered and insulated. The stud at the 12 o'clock position behind the tach is where the coil should be attached and where that pin connects to. The last picture (sorry its fuzzy) shows the correct wiring with the stud at the 4 o'clock position wired to a constant 12V source for the clock (the instrament cluster is upside down). The pink wire that is cut in the pictures is for the fuel gauge which has been re-routed to the console fuel gauge.
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68 RS Coupe 355/350 TH, Detroit Speed, Hotchkis, Vintage Air, 8.5" 3.42 posi 10-bolt, MagnaFlow 2 1/2" exhaust, etc.

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post #2 of 6 (permalink) Old Sep 20th, 13, 05:16 PM
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Re: Tic-toc-tach wiring (repo)

Larry, where did you connect the Red wire (clock) for the 12v constant source?
If it was already there, then I guess I'll need to fish it out. I'm changing to a quartz clock and my original clock didn't have a wire connected to it.

Thank you for your consideration

Regards

Dennis
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post #3 of 6 (permalink) Old Sep 20th, 13, 08:40 PM
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Re: Tic-toc-tach wiring (repo)

Clock goes to the spade marked BAT.
It is to the right of the fuse marked
CLK LTR CTSY

CLK = Clock
LTR = Lighter
CTSY for the Courtesy lights.
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post #4 of 6 (permalink) Old Sep 20th, 13, 11:52 PM Thread Starter
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Re: Tic-toc-tach wiring (repo)

Any constant 12V source will work. Brian's suggestion will work fine.

68 RS Coupe 355/350 TH, Detroit Speed, Hotchkis, Vintage Air, 8.5" 3.42 posi 10-bolt, MagnaFlow 2 1/2" exhaust, etc.

"The public cannot be too curious concerning the characters of public men."
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post #5 of 6 (permalink) Old Sep 21st, 13, 08:23 AM
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Re: Tic-toc-tach wiring (repo)

Thank you both I really appreciate it
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post #6 of 6 (permalink) Old Aug 27th, 18, 12:45 PM
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Re: Tic-toc-tach wiring (repo)

Thanks this saved my butt

Steve
Smithtown NY
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