F 150 4WD Pickup V8-5.4L CNG VIN M (2001)
Battery Cable: Service and Repair
Dual Battery Cable Disconnect
DISCONNECT
1. Disconnect the secondary battery ground cable (LH side of the engine compartment).
2. Disconnect the primary battery ground cable (RH side of the engine compartment).
CONNECT
1. Connect the primary battery ground cable (RH side of the engine compartment).
2. Connect the secondary battery ground cable (LH side of the engine compartment).