The indicator circuit is protected by a 15 amp fuse 10. It also covers headlamp flash. Could it be that your repair has created a short and blown it?
The indicator flasher relays for individual indicators and hazard lights are embedded in a PCB module behind the dash. If however as your first post suggests, it was only the rear n/s indication that failed and you found fault with the bulb connection then unlikely to be the relay.
