[1078]

my cousin just picked up a pair of '55 M38's. They have the 24 volt electrical system. Anyone with suggestions on conversion to 12 volts?

 

[Guest]

I used Painless wiring on my commando. I used the standard 12 circuit streetrod harness because it was cheapest and I did not need a dedicated jeep harness with 4wd connections. It works great and eliminates the fuseless fire hazard of early jeeps.

 

[1078]

i was bringing this back to the top. I was wondering about the alt. and all of thatm if anyone has any experience converting old military crap. The M38 is a 4 cyl.

 

[Guest]

Most military stuff I have seen has a 24V generator on it. That would mean you either need to craft a new mount for an alternator or find one off a CJ of the same year. I start work at the Ft Lewis military museum today, and if you want I could probably look at the M38 they have outside if you need me to.

 

[RRich]

Probably the easiest way is install an internally regulated GM alternator - like from a 70's Camaro. It'll probably take some creativity on the bracket from the old generator to the alternator.
And the starter will need to be replaced with a 12 volter too - shouldn't be a problem there.
Then replace all the bulbs to 12 volt bulbs.
Ammeter will still work fine, gas gauge may show 1/2 when full.
And of course, a 12 volt battery.

Don't toss out the 24 volt generator, regulator or starter - there are purist buffs that will want them.

One thing you have to deal with is the cloth covered wires - not good insulation, especially after 50 years.

Sounds like a great find.

 

[090]

If it works, i would leave it alone.