Posted by Don Daynes on June 07, 2004 at 23:59:09 from 67.125.197.140
In Reply to: '80 528i: purpose of relay under rear seat? posted by Ken AZ on June 07, 2004 at 10:54:39:
The device under the rear seat, driver side is the seatbelt warning timer. The fuel pump is controlled by the combo relay. Start by checking fuse #1. Pin 88d on the combo relay is what supplies power to the fuel pumps.