TM 10-3930-659-20 Table 4-2.  Electrical Troubleshooting (Con't). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 3.  Inspect taillight and rear turn signal/emergency flashers for burned out lamps or damaged taillight and rear turn signal/emergency flashers. Replace burned out lamps (see paragraph 6-25). Replace damaged taillight and rear turn signal/emergency flashers (see paragraph 6-25). Step 4.  Check brake light switch for continuity (see paragraph 2-27). Replace damaged brake light switch (see paragraph 6-30). Step 5.  Check wiring harnesses for brake light and turn signal/emergency flashers circuit for continuity (see paragraphs 2-27 and 6-73). Repair or replace damaged connectors or wires (see paragraph 2-28). 20.  BLACKOUT LIGHTS ARE NOT WORKING. Step 1.  Check blackout light fuse for continuity (see paragraph 2-27). Replace damaged 15 amp fuse (see paragraph 6-13). Step 2.  Check accessory relay within blackout light circuit of load center wiring harness for voltage and continuity (see paragraphs 2-27 and 6-73). Replace damaged accessory relay (see paragraph 6-12). Step 3.  Inspect blackout lights for burned out lamps or damaged blackout lights. Replace burned out lamps (see paragraph 6-22, 6-23, or 6-26). Replace damaged blackout lights (see paragraph 6-22, 6-23, or 6-26). Step 4.  Check blackout light switch for continuity (see paragraph 2-27). Replace damaged blackout light switch (see paragraph 6-11). Step 5.  Check wiring harnesses within blackout light circuit for continuity (see paragraphs 2-27 and 6-73). Replace damaged connector or wire (see paragraph 2-28). 21.  DOMELIGHT IS NOT WORKING. Step 1.  Check domelight fuse for continuity (see paragraph 2-27) Replace damaged 10 amp fuse (see paragraph 6-13). Step 2.  Check accessory relay within domelight and rear worklight circuit of load center wiring harness for continuity (see paragraphs 2-27 and 6-73). Replace damaged accessory relay (see paragraph 6-12). 4-33