you'll need to figure out what it is you need from your truck, what electrics will you need to power &/or any future additions. but for most of us the 10 or 12 should work out just fine. you may have to make a plate to bolt your alt to @ the block to line-up the belt. i used a GM 10si - 12 volt
12 volt systems::::
also avail 12si, 12 ci
http://www.rowand.net/Shop/Tech/GmAlternatorIdentification.htm
there are one wire and three wire hook-ups.
my .02 is for the three wire wink
http://www.madelectrical.com/electricaltech/remotevoltagesensing.shtml
http://www.6066gmcguy.org/charging.htm
some good info here...


Last edited by carolines truck; 05/16/2008 5:59 AM.

Jim & Caroline
The highway is for gamblers, better use your good sense."
Gooday-that's my 1¢ answer due to the lousy economy ~ cause I ain't got - no . mo . doe

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