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Old 09-20-2009, 03:43 PM
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Painless VSS?

I have a Painless 60103 harness for SBC TPI speed density. does anyone know if one of the two VSS leads (1 orange and 1 black wire) is grounded? I'm trying to use an electric Autometer speedometer with the same pulse generator as the ECM uses.

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Old 09-21-2009, 04:11 PM
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60103 Painless

Hey Man, I read the instruction manual for your late TPI (90-92) (60103) wiring kit. It uses the VSS signal that is a sine wave output. One wire from the VSS connects to a yellow wire from the kit harness, the other wire connects to a purple wire labeled VSS from the kit harness. Neither wire is grounded. On the early TPI kit (86-89)(60102) the VSS signal is square wave output where one wire is grounded and the other connects to a brown wire labeled VSS from the kit harness. olnolan
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Old 09-21-2009, 05:44 PM
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I got some info from Painless. Like it's been said the yellow and purple wires hook to the pulse generator. You have to add a wire from the ECM at BB11. This is a VSS output of 4000ppm.
Thanks for the help
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