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10-05-2011, 11:21 PM
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Registered User
 
Join Date: Apr 2011
Location: Hartford CT
Posts: 223
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Speedo pin diagram?
Does anyone know what terminal is which on the back of an electric Burb/Blazer speedometer? I picked one up for my '80 GMC with a 5.3 swap, but I only have the speedo with the circuit board in the back, and I can't find a wiring diagram with the pinouts for the speedo. I gather I need +12v, ground, and VSS (already conditioned by the PCM) but I don't know which pin is which
Any help is appreciated! Thanks!
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-Steve  1980 GMC C15 Sierra LWB Dark Carmine Red/Carmine Int Was: 250/3spd (1980-88), then a 305/TH350 (1988-2011) Now: 5.3/4L60E, 2.73 12-bolt open rear |
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