What was found
(CAN) AFTER TAKEOFF CREW NOTED THAT LDG GEAR SELECTOR REMAINED RESTRICTED BY ANTI-RETRACTION PLUNGER,&LIFT- DUMPER SYS MAGNETIC INDS REMAINED BARBER POLED. CREW USED MANUAL OVERRIDE TO RETRACT LDG GEAR, HOWEVER, SINCE COMBINED DISCREPANCIES INDICATED GROUND/FLT SYS MALFUNCTION, CREW ELECTED TO RETURN FOR MAINT ACTION. A/C RETURNED & LANDED YYC WITH NO FURTHER EVENTS. MAINT INVEST. INVOLVED REPLACED OF SUSPECT GROUND/FLT SWITCH, & INVEST. OF GROUND/FLT WIRING. GROUND WIRE GC17A22N-KA1, LOCATED IN WIRING HARNESS ADJACENT TO BULKHEAD CONNECTOR IN LT/ WHEEL WELL FOUND OPEN DUE TO CHAFING IN WIRE BUNDLE. WIRE REPLACED & HARNESS SECURED TO PREVENT CHAFING.