Tachometer Blues - Team Camaro Tech
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post #1 of 3 (permalink) Old Mar 20th, 08, 09:01 AM Thread Starter
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Join Date: Sep 2007
Location: hyattsville, md
Posts: 87
Unhappy Tachometer Blues

I purchased a Sun #CP7901 that I can't get to work. I have a 69 Camaro with the coil on top of the distributor. The instructions say red to hot, black to ground, and green to the negative terminal that is located next to the terminal that actually starts the car. As you know both terminals are located on the side of the coil. I followed the instructions but my tach's working. I want to know can I tap one of the harness wires that plugs into coil near these terminals. One of them has to be a negative that flows back to the battery. Is this a common problem or do I have a busted tach?! Thanks.
watzignition is offline  
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post #2 of 3 (permalink) Old Mar 20th, 08, 09:24 AM
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Join Date: Feb 2007
Location: right of center
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Re: Tachometer Blues

sounds like you have an HEI distributor. the outer 2 connectors from left to right are 'tach' and 'batt'. use the left spade connector under the cover, or if a harness connector is plugged in, you can tap into that wire.
guccieng is offline  
post #3 of 3 (permalink) Old Mar 21st, 08, 09:16 AM Thread Starter
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Re: Tachometer Blues

Problem resolved; I did something wrong; don't know what it was. Thanks for your interest and insight. Watzignition.
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