TM 10-3930-669-20 c. Cab Buss Bar Cable Removal. (1)   Open cab door (1). (2)   Remove seven screws (2), washers (3), and lower dash panel (4) from dash frame (5). (3)   Remove nut (6), washer (7), and six wires (8) from cab shunt (9). (4)   Remove nut (10), washer (11), and cable (12) from cab shunt (9). 7-127