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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Gauge polarity

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Old Dec 23, 2006 | 08:18 PM
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Gauge polarity

Does anyone know how to determine the polarity (which terminal is grounded) of instrument gauges; I don't see any markings on the late '80's gauges I am using in my 50 F1. Short of trial and error, as I don't have my senders connected yet. I have taken an ohm meter to look for continuity to the case, but no luck.

Also, the dash light reflector to illuminate the gauges seems to be "painted over" with a white substance, is this stock. I'm thinking of removing it just where the light mounts to give more light to gauges. I'm using green LED's for retro look.

Tom
 
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