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On the M1009 CUCV does anyone know how the junction block on the fire wall is supposed to work. It is the 12 volt junction beside the glow plug relay. When I bought mine it was deleted so I am trying to get my charging system to work. Any info would be nice I just need to know its function like...

Thank you I will start with the relay and pull the dash back apart. Hopefully I will find something.

I now have all of the correct voltage. Everything is charging properly however my voltage gauge or alt lights arent working.

Does anyone have a general idea of how the passenger alt runs to the battery? I’ve changed both alts and batteries, there was a lot of back woods wiring I’ve had to correct. I still do not have either gen light on the dash however my alt 1 was pretty straightforward in the TM. Alt 1 voltage is...

Does anyone know the exact teeth count in a M1009 th400 trans for the speedometer gear.

I have downloaded the manual and read thru it. I have purchased new alternators. However on the passenger side alt there is a compensator on the back. What does this do and is it needed? Side note the alt I bought does have the bolt for the compensator.

I got 11 volts both batteries pulled both they both charged fine then put them back in the truck started fine then tested voltage at alternators neither were reading anything I ordered a new alt for driver side and I am looking for a replacement for the passenger side alt now

I’m at a loss I bought this 85 CUCV blazer and when the key is on neither alt lights come on when testing both batteries together I’m getting 24 volts how ever the batteries are dieing I’m not sure what the guy before me did but if anyone has any help it would be appreciated