TM 9-2330-356-14
c.
Replacement of Preheat indicator Light. Refer to
(4) Replace indicator light socket into light body.
(5) Close panel door. Be sure that tubing to gages
indicator light.
is not folded or crimped. Secure door with six screws.
(1) Removal.
e.
Replacement of Control Panel Plate. Remove all
switches, gages and light following instructions in b and c
(a) Disconnect negative battery lead from
plate to control panel. Remove control panel plate. Install
new plate and reinstall switches, gages, and light.
Repair of Wiring. Repair any cracked, cut, or
control panel door and pull door open. Hold door ata90
f.
broken insulation with electrical tape (item 29, Appendix
angle with control panel with a 20-inch length of safety
E). Replace wiring when
damage cannot be
repaired.
wire threaded through one hole in door and
Tighten loose connections.
corresponding hole in control panel.
4-25. Control Panel Wiring Harness and Conduit
(c) Separate indicator light socket
WARNING
(d) Remove nut and washer securing light
body to control panel door. Remove light body.
When troubleshooting an electrical malfunc-
tion or performing electrical maintenance,
ALWAYS disconnect intervehicular electrical
indicator light ground leads. Disconnect the other lead
cable from semitrailer, and negative battery
from control panel harness.
cables at batteries. Failure to follow this warn-
ing may create a spark and explosion, result-
(f) Remove indicator light socket.
ing In serious injury or death to personnel.
(2) Installation.
Repair of Wiring. Repair any cracked, cut, or
a.
broken insulation with electrical tape (item 29, Appendix
E). Replace wiring
harness when
damage cannot be
in door and secure with washer and nut.
repaired.
(b) Insert socket into light body.
Replacement of Control Panel Wiring Harness.
b.
(1) Removal.
to the existing wire using a crimp splice. Install remaining
wire by crimping splice to control panel harness.
(a) Open control panel by removing six
(d) Remove safety wire from control panel
door and close door. Be sure that tubing to gages is not
(b) Disconnect all electrical leads and
folded or crimped. Secure door with six screws.
jumper assemblies from control panel wiring harness
(e) Install battery negative ground lead
(c) With a wire cutter, remove all terminals
from the ends of the harness wires.
Preheat Indicator Light Lamp Replacement.
d.
(d) Disconnect the wiring harness from the
control panel door and pull door open.
(e) Secure a strong cord, about ten feet
(2) Separate indicator light socket from light
longer than the harness, to the end of the wiring harness.
body.
(f) Pull harness out of conduit and allow
cord to be pulled into the conduit. When harness is out,
(3) Remove lamp from the indicator socket and
install a new lamp.
cord should be visible at both ends of conduit.