TM 9-2350-247-20-3REPLACE NBC WIRING HARNESS FROM BATTERY COMPARTMENT TO MANIFOLD(M548A3) — Continued0531 00REMOVALNOTEMark all parts for easy identification before removing.1. Disconnect circuit 400D lead (1) from lead (2) on vehicle compartment heater control box (3).2. Disconnect circuit 400C lead (4) from circuit 400 lead (5).3. Disconnect circuit 400A lead (6) from circuit 400 lead (7) on coolant heater control box (8), if installed.4. Disconnect NBC wiring harness (9) at connector (10) to M3 heater harness connector (11).5. Remove three clamps (12), screws (13), and lock washers (14) securing NBC wiring harness (9) and existing harness toweld nuts behind instrument panel (15). Discard lock washers.6. Remove NBC wiring harness (9) with grommets (16) from stiffener (17) and stiffener (18).0531 00-2
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