12 volt positive ground?

[trac]

I have a 1957 MH50 would any one know if it came from factory with positive ground or negitive ground? I ve gone through two regulators that will not work. Is it just China crap or i m i doing something wrong

 

[Jerry/MT]

Are you polarizing the generator before you start up with the new reaulator?

 

[JJL]

I think positive ground, but as Jerry said, make sure you are polarizing your system before you start it up.

 

[Anonymous-0]

I'd think negative ground but aren't the expert on a 57 model. Dave

 

[trac]

yep many times ARM. to BATT.i ended up installing a genny on it

 

[trac]

Not a genny but alternater i would like to put it back to gen.

 

[JJL]

If you have an altenator I believe it should be NEG ground.

 

[trac]

Thats the way i have it i just couldn t under stand Y regulators would not work right out of the box

 

[Steven-Id]

I don't know about the 1957 year but my 1958 MF50 is negative ground.
Steven

 

[trac]

Yea thats what i thought just whanted to make sure

 

[MPM1]

Make sure the alternator isn"t internally regulated. And if it is make sure it is working.
If that"s the case external regulator will never work.

 

[Jerry/MT]

You don"t polarize an alterntor, just a generator. many alternators have built in regulators and do not need a seperate regulator. I"d suggest you take your alternator in and have it tested if you "polarized it" and then tried to use a VR on it.

 

[trac]

No i don t have the VR on with the alternater but my points in the voltate regulator would stay closed with key off draining my battery so i took generator off then put on the alt.