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I have a 56' B42,i just got with no batteries or cables( i dont know why) my question is do i need 6 volt or 12 volt batteries?

Is it a 6 volt or 12 volt system? Electrical is my biggest downfall in automotive so any help is greatly appreciated.

Thanks

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I have a 56' B42,i just got with no batteries or cables( i dont know why) my question is do i need 6 volt or 12 volt batteries?

Is it a 6 volt or 12 volt system? Electrical is my biggest downfall in automotive so any help is greatly appreciated.

Thanks

There will be a tag on the generator, (if not removed) that will tell you the system voltage and if there is a large switch under the passenger seat beneath a latch retained cover, it will tell us more.

You could also pull a headlamp, or tailight out to see it's operating voltage for a start.

From experience, your truck is probably a six volt positive ground system, but I'm not that familiar with the gas powered B models; nor these Mack things in general.

Rob

Dog.jpg.487f03da076af0150d2376dbd16843ed.jpgPlodding along with no job nor practical application for my existence, but still trying to fix what's broke.

 

 

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Thanks Rob,There was no tag on the generator nor a switch under the seat. I will check the bulbs tomorrow...

The starter motor will have a tag, and one of the tabs on the voltage regulator will be stamped with the voltage also. Look on you cab firewall for a magnetic switch that looks like an old Ford starter solenoid. Most of those are stamped also.

I still think the truck is probably 6V positive ground, (if original) and has an EN402 engine if a flathead.

Rob

Dog.jpg.487f03da076af0150d2376dbd16843ed.jpgPlodding along with no job nor practical application for my existence, but still trying to fix what's broke.

 

 

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