Switched M1009 from 24V to 12V, Voltmeter doesnt work.

[Rebelpride]

OK, I am the proud owner of a '85 M1009 Blazer, I switched it over from a 24V to a 12V system. But now my voltmeter doesnt work. In the conversion I removed the drivers side alternator and the two blue and one orange fusible link wires from the 12V junction block. Now my volt meter doesnt work. I have read that there is a ceramic resistor on the back of the guage, to take the voltage from 24 down to 12 volts. If I remove this resistor will this allow the guage to work as the resistor is canceling out the 12V now. Or did I unhook a wire somewhere and if so where and what do I need to hook up or hook back up to.

 

[CCATLETT1984]

yes, just remove the resistor and all should be fine.

if you download the unit tech manual
it will have the wiring schematics and you will be able to trace the wires from the volt meter to where they connect to the charging circuit.

 

[Rebelpride]

Thanks I'll give that a try when I get home.

 

[acetomatoco]

Or just put in a civvy 12V voltmeter to replace the original GAUGE.

 

[CCATLETT1984]

the military put a 12v gauge in the cucv, there is a ceramic resistor on it that drops the 24v to 12v so the gauge displays correctly.