TEST OPTIONS     Continuity Test or STE/ICE-R Test #91            TEST OPTIONS                REASON FOR QUESTION     Voltage Test or STE/ICE-R Test #89 YES NO NO WARNING Read WARNING on following page. YES 14. 15. Is 12 VDC present at relay K10 terminal 87? If 12 VDC is not present, wire 1940 is faulty.       KNOWN INFO        Faulty dashboard cable assembly. Faulty relay K10. Blackout stoplights illuminate. Lamp OK. Rear lights cable assembly OK. Composite taillight assembly OK. Turn signal switch OK. Diode D1B OK. Diode D2A OK. Main light switch OK. Diode D1A OK. POSSIBLE PROBLEMS       KNOWN INFO        Faulty dashboard cable assembly. Faulty relay K10. Blackout stoplights illuminate. Lamp OK. Rear lights cable assembly OK. Composite taillight assembly OK. Turn signal switch OK. Diode D1B OK. Diode D2A OK. Main light switch OK. Diode D1A OK. POSSIBLE PROBLEMS e59. ONE OR BOTH STOPLIGHTS DO NOT ILLUMINATE (CONT) TM 9-2320-365-20-1 2-724          Change 1 Is continuity present from relay K10 terminal 85 to ground? REASON FOR QUESTION If continuity is not present, wire 3046 is faulty. Repair wire 1940 from relay K10 terminal 87 to terminal board TB1 position 29 (para 2-40) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11). Repair wire 3046 from relay K10 terminal 85 to terminal board TB2 position 60 (para 2-40) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11).