What was found
DURING FLT, HEARD CRACKING & ARCING SOUND COMING FROM REAR OF COCKPIT (CB PANEL), FOLLOWED BY ACRID ELECTRICAL ODOR. DONNED O2 & DIVERTED INTO MCO. NO APPARENT EQUIP PROBLEMS DURING APPROACH & LANDING. LANDED 18R MCO UNEVENTFULLY. FOUND LANDING GEAR AND AIR COND COMPARTMENT DOME LIGHT C/B POPPED AND WOULD NOT RESET. CYCLED A/C COMPARTMENT DOME SWITCH TO OFF AND THEN C/B RESET. PULLED AND COLLARED C/B. MEL 33-45-01. ALL WHEEL WELL DOME LIGHT(S) INOP. REMOVED AND REPLACED CIRCUIT BREAKER 4LM, AND SWITCH 33LS PER AWM 33-37-01 AND AWM 33-35-01 RESPECTIVLEY. PERFORMED SATISFACTORY OPERATIONAL CHECK OF A/C BAY AND LANDING GEAR BAY LIGHTING PER AMM 33-32-00-5.