Sprint St 1050 Rear Indicator Issue

Hey All

So the rear right indicator on my '05 Sprint ST 1050 seems to have stopped working. Now, I'm a reasonably competent home mechanic, I opened up the indicator unit to inspect the bulb.
BUT:
The bulb is actually fine, (I even swapped the left & right bulbs over to prove it to myself!), but the right one doesn't operate. Front indicator functions fine. In fact, it functions too well; the right hand side operates as if both bulbs are working, i.e. blinks at the correct rate.

I assumed a relay issue, but I've had relay issues on other bikes and, like a bulb failure, there is some tell-tale sign of either very rapid flashing or no flashing at all. I assumed if it was a loose connector I'd see some change in blink rate as well.

Any thoughts? I'm tempted to buy a indicator & replace the whole thing & bank the bulb as a spare.

Thanks in advance.

 

I'll admit, I'm not entirely sure when it stopped working, my pre-ride checks of that kind of thing are a little more infrequent than they should be.

Where is the connector buried? If it's easy to get to then I don't mind doing a bit more trouble shooting, but to be honest, I hate dealing with electrical gremlins (And I've had to deal with more than a few roaming around my Sprint) so I'm kind of tempted to replace the whole unit outright, save any faffing around.