PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Engine to Dash Pinouts

Old May 16, 2004 | 03:47 AM
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Knyghtmare's Avatar
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Default Engine to Dash Pinouts

I am looking for the pinouts of the 2 plugs from the Engine harness that go through the firewall into the car and plug into the Dash harness. Thanks a lot. Need ASAP, in the middle of the wiring process. TIA.

Oh yeah, looking for a harness 99-02. My harness is actually an 02. Thanks.
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Old May 16, 2004 | 07:42 AM
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There is only one useable dash wire...the oil pressure gauge. The 4th gen feeds serial data to the other gauges, so your 3rd gen can't use that.

You can get a horribly inaccurate tach signal (4cyl waveform) from the traction control pin on one of the C100/C101/C105 connectors, don't recall which offhand.

VSS signal may be useable, I haven't gotten that far yet but it looked like I could reuse the VSS output from the PCM (cruise control, 4K pulse/mi?) for my speedometer.
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