mo ranch

New User
need help. have a 1970 ford 3000 gas 3cyl. put in new dash panel and gas and temp gauge goes off like if i turned switch off. may come back on but not always.
 
IIRC, they use an "instrument voltage regulator" which pulses the battery voltage to those gauges at about 50% duty cycle. Check grounding and the IVR.
 

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