Positive Ground Truck

[sturmtyger380]

Hi Folks,

I have been working on everything but my M37. Right now I have another club members M37 over at my place and I have been helping him get it fixed up.

It ran good over to my place and now it won’t start. It needs a new wiring harness and we are ready to start changing that out.

I got to looking and on his truck the positive wire coming off of the batteries is going to the ground! The negative wire is running to the starter!!!

How is this working? My M37 is negative ground.

Can we just switch back to negative ground or will the starter run backwards?

Did the military have different starters? We need some good advice.

Thanks, Alan

[Cal_Gary]

I haven't seen any M-Series vehicle that came out with a positive ground-that would shoot compatability in the pants when it comes to using slave cables, etc.
Gary

[sturmtyger380]

Well I realized the starter turns the same direction regardless of which way it is wired. So I guess the previous owner got the cables mixed up on the batteries.

Do you guys think I need to polarize the generator. I guess it would not hurt to do it.

[Cal_Gary]

I would think it would remain polarized as is, but I haven't dealt with polarizing a generator in many years.
Gary