Need Help With Tac Output Wire....
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Joined: Oct 2005
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From: Waco TX
Need Help With Tac Output Wire....
I have a 99 C5. I'm installing a nitros works system with a RPM window switch, and WOT switch. I have all the wires figured out, except which wire is my factory tach output. Not sure where to look. Any help would be great! Thanks. 
Safety Car
Joined: Apr 2004
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From: Hayward California
Melting Slicks
Joined: Mar 2003
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From: Macomb MI
That location is awesome if your mounting the RPM switch inside the vehicle. I also found that if you use a test light to ground and probe the white wires you will see the tach move when you hit the right "white wire". If its the wront one some other light will turn on. I think the other whites are emergency brake and skip shift.
If you mounting the rpm under the hood just snag the white wiref rom pin 10 on the pcm.
Phil
If you mounting the rpm under the hood just snag the white wiref rom pin 10 on the pcm.
Phil
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Joined: Oct 2005
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From: Waco TX
Originally Posted by RoadRebel
That location is awesome if your mounting the RPM switch inside the vehicle. I also found that if you use a test light to ground and probe the white wires you will see the tach move when you hit the right "white wire". If its the wront one some other light will turn on. I think the other whites are emergency brake and skip shift.
If you mounting the rpm under the hood just snag the white wiref rom pin 10 on the pcm.
Phil
If you mounting the rpm under the hood just snag the white wiref rom pin 10 on the pcm.
Phil
