GM Service Manual Online
For 1990-2009 cars only

Battery Circuit Description for Oldsmobile Eighty Eight 1999

The battery positive terminal is connected to the the generator, starter solenoid and to the RH underhood fuse block by CKT 1 (BLK) cables.

The battery negative terminal is connected to engine ground G102 and chassis ground G105 via two CKT 50 (BLK) ground cables.