1970 Alternator Hook Up

[AMXguy]

I bought a new alternator and when I went to hook it up I find it has only two terminals, BATT and FLD .   the GND one isn't there but the screw looks insulated.

Do I just put a terminal on GND  and  hook it up or leave that wire off and forget it?   

This is on a new build with a mopar performance regulator and a new M&H harness  if it matters.

[lulurocks]

If you can post a pic:


you  need  fld + and fld-  and batt.    The system gets ground reference thru the voltages regs chassis ground


( if you have a 70 and up voltage regulator ..........)****************




Maybe they possibly left off the ring terminal with the male tab for you to connect ...   

Just a guess  without seeing it ...

    

[Chryco Psycho]

sounds like you have the 69 with the heart shaped back , the power to the field is regulated & the ground is to the alt body
 in 70 the field ground is regulated with much less load so the field has power in & ground out to hte reg

[AMXguy]

Yes it's the old style , but that's what the book says it should be.     do I need the newer one with the square holes in the back?    I see it does have 3  terminals.

[Chryco Psycho]

The Hear shaped back is corret for 70 but has the 3 terminals , if you do not are what year you use the square back will work & are much easier to find

[AMXguy]

I traded it for the square back.  thanks.