Stand Alone Trans Controller & OneGauge Digital Gauges

Tiha

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Good Question,

I would imagine you could unplug the cluster to test that theory? I honestly don't know.
 

jschildm

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Disclaimer: I have not found out for myself.

However, I thought the only thing needed from the dash on a 7.3 was a bulb or resistor in place of the battery "idiot light" on the dash. I believe it is part of the line that completes the signal from the PCM to tell the alternator to charge.
 
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The bulb circuit provides the voltage to excite the field windings. The alternator will not charge without that, since unlike an old-style generator, they are not self-exciting. Cheers!
 

Bugman

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And there is a resistor that is connected across the light circuit

Sent from my SM-A426U using Tapatalk
 

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