Pleased you have located the problem Ian!

Holden seem to have switches Ian here. Given others have had similar problems might be useful to carry a spare whilst still available.

Discovered something odd today, an guessing it might be relay related. All indicator lights are working. Turning left normal, hazards work as normal, but turning right, they are rapid, like you get when you have a bulb out, but they both flash. If this is a relay issue, can anyone advise where it is, and which one it is to replace please. I'm guessing it's under the dash, above the gear stick. TIA

If you turn on your sidelight or press the brakes do these flash/flicker as well ? ... if so suspect the earth first.

K

Yes I would suspect earth or a fault in one of the bulbs even though they flash.

The side that's flashing fast, the rear bulb is dimmer. Last year this bulb wasn't working and caused the same rapid flashing as you'd expect. It was due to a corroded connector that I solved by cleaning it up some what by squirting electrical cleaner inside. Maybe if the contacts are poor again, it isn't drawing as much power to that bulb, therefore causing the rapid flash. Could this be the case?

Tried this and all good.

All cured. Burgundymogs suggestion got me thinking about the wiring. A good squirt of electrical cleaner into the connectors and it cured the problem.

Well done