TM 10-3930-675-20-1 0006 00-7 TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED 0006 00 Table 2. Electrical Troubleshooting Procedures (Non-Error Code) - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 3.   Front/Rear   Side   Marker   Light(s)   Do   Not Operate When Headlight Switch is Turned On - Continued. 2.  Inspect    marker    lights    for damage and burned out lamps. a.  Replace   burned   out   lamps (WP 0085 00). b.  Replace     damaged     marker light (WP 0085 00). 3.  Inspect  marker  lights,  wiring harnesses, and connectors for damage, continuity, and proper voltage (WP 0199 00- 41). Repair or replace damaged wires or connectors (WP 0111 00). 4.   Taillight(s) Do Not Operate When Headlight Switch is Turned On. 1.  Ensure  that  taillight  and  side marker   light   circuit   breaker numbers  22  and  23  are  not tripped. Reset circuit breakers as required (WP 0073 00). 2.  Inspect  taillights  for  damage and burned out lamps. Replace  burned  out  lamps  (WP 0085 00). 3.  Inspect taillight wiring harness and   connectors   for   damage, continuity, and proper voltage (24V). Repair or replace damaged wires or connectors (WP 0111 00). 5.   Stoplight(s)  Do  Not  Operate  When  Brake Pedal (s) is Pressed. 1.  Check   position   of   blackout drive/marker light switch. Place blackout drive/marker light switch in OFF position. 2.  Ensure that brake light circuit breaker numbers 03 and 10 are not tripped. Reset circuit breakers as required (WP 0073 00). 3.  Ensure  blackout  light  circuit breaker   number   24   is   not tripped. Reset circuit breaker as required (WP 0073 00). 4.  Inspect stoplights for damage and burned out lamps. Replace  burned  out  lamps  (WP 0085 00). 5.  Inspect stoplight wiring harness   and   connectors   for damage, continuity, and proper voltage. Repair or replace damaged wires or connectors (WP 0111 00). 6.  Remove stoplight relay numbers 3010 (RL5), 3015R, and   3015L   and   check   for shorted and damaged relay. Replace    shorted    or    damaged relay (WP 0073 00).