FORD 1998 E-150 - Manual (Page 110)

Gasoline engines
Disconnect:
1. Disconnect the primary battery
ground cable.
2. Disconnect the auxiliary battery
frame ground.
Remove the ground bolt.
Pull the cable away from the frame
and make sure that the cable does
not contact the frame.
Connect:
1. Reconnect the auxiliary battery
frame ground.
Maintenance and care
110