Originally Posted by RichardV6
Apologies for suspecting the TSM unit Biggle but it is notoriously unreliable. Applying a bit of logic pretty much the only component that would cause your issue are the diodes fitted to loom side contacts on the 12 pin instrument switch connector. Specifically pins 8 and 9. You haven't said as far as I can see which side is not working when hazards are selected but if its left check diode attached to pin 8 if right, diode attached to pin 9. These are needed to isolate left from right indicator feeds when hazards not in use and I suspect one has gone open circuit. Note polarity if replacing - the wiring diagram shows black marked end (cathode) connecting to each of above mentioned pins. The other ends go to a common pin on connector probably pin 6, but this will be obvious when viewing connector.

Thanks for the feedback so far.. .do you know if the 12 pin instrument connector in the bundle of leads around the fuses or is it literally directly behind the instruments?