Triumph Rs Sprint 955i Pass Switch

Hi, just checking my Sprint over before MOT and all lights o.k. including Pass switch, except that when the headlights are on and I press the Pass switch the relay clicks then the headlights stopped working. I assumed the fuse had blown but no. I fiddled with the relay tried the headlights again and they worked.

I have repeated this a couple of times with the same results. Pass works without light on, put the lights on press pass and the headlights stop working, press relay and the lights start working again. I do switch ignition off each time. I will have to try with ignition on when I get back from MOT and hope tester doesnt press pass with lights on.

Any ideas?
Cheers

 

Seems like it was a "sticky" relay, probably because I never use the pass switch.