11-17. ENGINE COOLANT HEATER WIRING HARNESS REPLACEMENT (Cont).
Install grommet (3)
If installing relay (10), perform step 2.
on wiring harness (2). Position wiring harness in cab. Push wiring harness
Plug relay (10) into wiring harness (2) and connect to mount.
Position wiring harness (2) in strap (9) and tighten nut. Connect wiring harness to cab heater
control panel assembly (8).
Connect wiring harness connector (6) to cab heater connector (7). Connect wiring harness (2)
to engine coolant heater (1). Install engine coolant heater cover. Connect wiring harness
connector (5) to engine coolant heater thermostat (4). Install new tie-down straps to wiring
Connect both battery negative cables. (See paragraph 4-38)
Check operation of engine coolant heater. (See TM 9-2320-289-10)