Thread: LS3 ECU Wiring Harness
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Old 02-02-2014, 07:44 AM
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Jethrow Jethrow is offline
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Join Date: Jul 2010
Location: Perth, WA
Cobra Make, Engine: FFR Mk4 Roadster, LS3, TR6060, 8 3/4"
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OK, next saga in my wiring quest.

Got some trouble getting the GMPP LSx ECU talking to my Speedhut speedo. For all you LSx bandits out there, where did you pull your vehicle speed signal from, and did you have to mod it before putting it into your gauge?

Currently I am taking my signal from the 'bulkhead connector, position D' and have tried

a) wiring it direct to the speedo (no luck)
and
b) wiring it direct plus adding a 12V power source thru a 10000 ohm resistor (also no luck)

Any thoughts welcome.

Tim
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Tim
FFR Mk4 Roadster
HSV Clubsport R8
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