Section VI. MAINTENANCE OF ELECTRICAL SYSTEM
Dome Light Lamp Replacement
Dome Light Switch Replacement
Fuse Replacement (M129 Series)
Clearance Light Assembly
Taillight Lamp Replacement
Dome Light Assemblies
Clearance Light Lamp Replacement
This section contains information on the removal, disassembly, cleaning, inspection, repair, assembly, and
installation (where authorized by the MAC, Appendix B) of the following items at the organizational level.
. Clearance lights
. Dome lights
Good connectors are essential for satisfactory operation of lights. If a single lamp does not function proper-
ly, determine if contact in receptacles and contacts in plugs are in proper positions. If not, remove all elec-
trical power from semitrailer, then carefully grasp contact with pliers and pull it to the proper position. Do
not deform contact of sleeves. Check terminals in connector of cable and individual lamp wire. Check ground
cable connection which must make clean contact with frame.
(M129 SERIES ONLY)
Disconnect 110-volt ac electrical power
cable from the 110-volt outside recep-
tacle before attempting to remove or
a. Place switch handle in OFF position.
b. Release pressure of snap fastener holding switch
box cover closed and open cover.
c. Grasp fuse firmly in the center and pull from
d. Holding new fuse in the center, press into clips.
e. Close cover and place switch handle in the ON
Figure 4-4. Switch box and circuit breaker load
center, covers open (M129 series)