140 amp CS144 self exciting or standard volt reg

[Ned Kelly]

If installing a CS144 alternator 140amp into a 85-88 K30, which is needed...standard voltage requlator or self exciting voltage regulator?
I was just going to get an off the shelf 1994 Buick Roadmaster 5.7l alternator.

 

[sweetk30]

all our trucks from these era use internal reg.

 

[Ned Kelly]

Ok, I got the CS144 now. I got the 4 prong repair plug as seen here (second from bottom):
http://www.alternatorparts.com/CS-144_Special_offer.htm
Any directions on how to hook up the original two prong SI wires to the new 4 wire adapter that goes into the new 140amp alternator?

All the local sources did not stock the 'SI to CS wiring harness' GM PN 8078 as mentioned here in post #34:
http://www.alternatorparts.com/CS-144_Special_offer.htm

 

[Cornfield creations]

You can order them from napa or most parts stores. I believe the napa number is EC80

 

[Ned Kelly]

Corn,
Current Napa number #EC82. I went to Napa, know nothing clerk (made little attempt to help or look it up) said never had such an adapter..blah, blah, blah. I called the main warehouse last evening and the fellow did find it. Ordered and it will be one week before it is in. THought I'd try wiring myself with the 4 prong repair harness but I may wait now that I ordered the EC82 for $16. GM #8078 adapter is discontinued. Thanks for trying to help.

 

[Cornfield creations]

That's weird, I just got mine 4 weeks ago. Glad you could find it though

 

[Ned Kelly]

Hmm...that is strange.

 

[gone huntin]

The local CarQuest here keeps them in stock.

 

[RootBreaker]

here is the one i have...
http://www.amazon.com/gp/product/B0..._m=ATVPDKIKX0DER&pf_rd_r=00RDASYGGDMQJKVZZWCT

biggie is the 12102921 part number.... think mine was ac delco...

i found this
Delco 8078/GM 12102921 if you have a volt gauge or
Delco 8077/GM 12083462 if you have an "idiot" light.



from this site..
http://www.montecarloss.com/community/ubbthreads.php?ubb=showflat&Number=493219