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Old 03-11-2011, 05:55 PM   #1
es67chevy
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How Do I Connect Painless Wiring Kit To Factory Repro Tach

I have an 18 Circuit Painless Wiring Kit. It has one wire (that I can find) for the tach. The back of the factory tach appears to have three different connections. Can anyone clue me in as to how I wire my tach up with the 18 circuit painless wiring harness? I appreciate any help anyone can offer. Thanks!
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Old 03-12-2011, 11:50 AM   #2
gcburdic
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Re: How Do I Connect Painless Wiring Kit To Factory Repro Tach

ttt
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Old 03-12-2011, 12:03 PM   #3
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Re: How Do I Connect Painless Wiring Kit To Factory Repro Tach

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Originally Posted by gcburdic View Post
ttt
Bump appreciated. And here is a pic of the back of my tach. I don't have the factory harness. Trying to determine if I need one since I'm not hooking up to a stock coil anyway. Its going to an HEI distributor. I assume I need a power, a ground, and the sender (or whatever it's called), but I don't know which is which and what the power requirements are.

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1967 C10 SWB
383 Stroker/TH400
Brother's One Piece Power Windows
Shaved Doors, Markers, and Bumpers
4/6 Early Classic Drop
Rear Fuel Tank (49-52 Chevy Car Tank)
Surf Blue Paint

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Old 03-12-2011, 12:05 PM   #4
gcburdic
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Re: How Do I Connect Painless Wiring Kit To Factory Repro Tach

I moved this over to the electrical forum for some help here....hopefully they'll chime in for ya
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Old 03-12-2011, 12:51 PM   #5
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Re: How Do I Connect Painless Wiring Kit To Factory Repro Tach

Here's an image of a labeled factory tach, the coil wire goes to the tach port on the HEI cap, the 12v port goes to an ignition source and the housing provides the ground through the dash.
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Old 03-12-2011, 01:57 PM   #6
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Re: How Do I Connect Painless Wiring Kit To Factory Repro Tach

Awesome! Thanks for the help.
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1967 C10 SWB
383 Stroker/TH400
Brother's One Piece Power Windows
Shaved Doors, Markers, and Bumpers
4/6 Early Classic Drop
Rear Fuel Tank (49-52 Chevy Car Tank)
Surf Blue Paint

Bella Vista, AR (Arkansas for those that get the 'A' states mixed up)

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Old 03-12-2011, 09:18 PM   #7
oldblue1968chevy
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Re: How Do I Connect Painless Wiring Kit To Factory Repro Tach

Yeah, the GM tachs are stamped, the top post is a ground.
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