gm alternator wiring harness | eBay Find great deals on eBay for gm alternator wiring harness. Shop with confidence. alternator conversion wiring harness adapter This harness will adapt a new AD or CS130D alternator to . a vehicle's early DN externally regulated GM wiring harness. All dash lights & gauges will function. Instructions included. _____ Delco AD to CS - Part # W1206. This harness will adapt from a Delco AD244 or CS130D . series factory wiring harness to a Delco CS130 or CS144 . style alternator.