What was found
AIRCRAFT WOULD NOT PRESSURIZE AFTER TAKEOFF. WIND NOISE WAS ALSO COMING FROM NOSE GEAR AREA. FLIGHT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. NOTE: FORWARD ACCESSORY COMPARTMENT DOOR LIGHT ILLUMINATED SEVERAL TIMES ON FINAL. MAINTENANCE FOUND E/E COMPARTMENT DOOR NOT COMPLETELY CLOSED. ALSO, FOUND CANNON PLUG DISCONNECTED AT E/E DOOR SWITCH. RESEATED DOOR AND RECONNECTED PLUG TO SWITCH. OPERATIONAL CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.