Modern Vespa

hi all my 300 is comming up to 52.000 mile from new..last few weeks its been cutting out while riding....then there clicking from the starter relay
put 2 new relays on still the same got power to the relay but
nothing coming out to the starter....just cant work it out
any help would be a great help..........cheers

if it's cutting out first, when was the last valve adjustment? how's fuel/air/spark delivery?

i'd be looking to handle the cutting out, as that could be causing the refusal to start as well.

loose wiring in the headset or on the starter maybe?

Suspect a bad ground connection between battery negative and frame. That can cause cutting out, and will almost certainly prevent enough current flowing to get the starter turning.