Auxillary plug?

That's settled then - it's the spider web removal adapter plug

I think it's just another auxillary plug, not a diagnostic. There are only two wires going to it so maybe it's typical Triumph thing where they forgot what to do with it.... 8)
 
Jimmy Rocket said:
Well, I thought it was for the spider web remover.

He should have the dealer check it then because it doesn't seem to be working, unless of course he's riding too slow!!