Here are some part numbers that might help you... 7127SW (single wire Alternator GM 12v) $45.00 +15.00 core @ Auto@ne 7127 (Regulated Alternator)12v $29.99 +15.00 core @ Auto@^ne These numbers are pretty much universal at any Auto parts store. SW denotes Single Wire. If you walk into a chain store they will probably not know what you are talking about so if possible ask the PARTS MNGR. to walk to the back room to serch for the unit. It will have a Black rubber plug in place at the back of the alternator (single wire). If you have any questions or need diagrams to wire it call the number below: 1800 228 9672 FREE tech Line. Will e mail or fax you schematics. Good Luck! JW