alternator wiring connectios

[cudanutz]

OK - im ready to connect the 70+ style alternator ( marked 2 flds connections ) on my 69 cuda with original wiring and regulator- will connect grn to alternator fld and a-jumper from the other fld to grd. MY QUESTION : there is 8 volts at both fld-terminals when grn is connected ( 2nd fld not grounded ) with engine running ---will i fry the alternator / wiring - if this is grounded? is it not a direct short by internally regulation - any thoughts? hep out there? cudanutz

 

[fishy68]

I haven't done it but have heard from many knowledgeable sources that the way you propose to do it is correct. One field connection to grn wire and ground the other. Alot of times when a circuit is open there will be residual voltage that can be measured with a voltmeter. That may be what your seeing. To play it safe you could get a fuse holder with a 2 or 3 amp fuse and ground the extra field through it for a test. I don't believe the field carries much current so it shouldn't blow the fuse if all is ok. If the fuse pops then it might be a problem. If it works you can eliminate the fuse and directly ground it.

 

[cudanutz]

thanks for the reply & support - will try fuse first as i dont want to replace another alternator .

 

[barracudadave67]

cudanutz
Don't know if you installed your alt yet, but all I did on mine was to make a short wire, with a spade connecter on one end and a loop connecter on the
other. This is a short wire that goes from the 2nd fld connection to the closest long screw, that holds the alt together.This will ground the alt housing , and the alt mounting bolts will ground the alt to the block. I did it this way on too of my cars. I also changed over to an electronic volt reg. Hope this helps

Dave C.