What was found
DURING THE TAKEOFF ROLL, PAST 80 KNOTS, THE LT PANEL CIRCUIT BREAKER TRIPPED, THE BACK LIGHT FOR THE LT PANEL AND STANDBY INSTRUMENTS FAILED AND THE ODOR OF BURNING ELECTRICAL WIRING WAS NOTICED. VERIFIED DISCREPANCY AND FOUND CIRCUIT BREAKER TRIPS WHEN DAY/NIGHT SWITCH IS PLACED IN THE DIM POSITION. REMOVED CONNECTOR PLUG PC035 AND NOTED CB STILL TRIPS. RE-INSTALLED CONNECTOR PLUG PC035. INSPECTED WIRING AND FOUND LT ICE DEECTOR LIGHT SHORTED. REPAIRED WIRE AND OPS CHECK LT PANEL BACK LIGHTING GOOD. REF WM 33-10-02, 20-10-01.