Gm Alternator Wiring Plug. Wiring harness to the later style Delco AD series alternator. On the back of GM alternators you will find a two- or four-wire plug along with a large output stud.
Delco 10SI and 12SI alternators. 8 Feet Length Plug and Wire Pigtail Replacement for GM Alternators with 4 Pin Oval Connectors Part Number 197-400. One wire will connect to the output.
Reconnect the ground cable start the engine and using a VOM meter verify that the alternator is charging at least 138 volts 1000 engine RPMs.
Make sure that the battery is fully charged. This current is fed to the cars battery charging it for later use. The wiring hookup is the same for the CS-130 and CS-130D alternators. On the back of GM alternators you will find a two- or four-wire plug along with a large output stud.