mtrosp
.020 Over
Do you know what the stock map number is for the 2015 Triumph Rocket 3 Roadster?Well from your bench test, it sounds like your relay is fine - more likely the ECU is not enabling
Which means most likely clutch switch or battery volts (or neutral or side-stand interlocks)
Is your neutral light on?
Have you tried with side-stand up?
(that interlock is EITHER Neutral OR Sidestand-Up to enable starter relay)