intermittent readings on the display.

[tapps]

last weekend the gear change reading was over the place, i took it out today, prior to starting it was reading 12.6v then raised ti 14.3v then while riding went back to 12.6v, then up & down, the the reading was up & down like a YOYO, the battery was replaced with the OEM one about 2 years ago, could it be the battery causing this, may need a trip to the dealers to run it through a diognostic check.

[Tynesidebob]

Check the battery connections are tight.

[PRD]

The switch
needs replacing or cleaning. I had the same problem and a new switch cured it.

[tapps]

Check the battery connections are tight.

they were tight, i cleaned a few earthing points on the leads as well as the battery terminals, gonna take it out for a run.

[tapps]

well. i done boxhill & newlands corner today, from chichester 110 mile's in all, when i started the bike up the voltage on the display was 12.6v the when out on the road it was reading 14.3v
and 14.4v

[Boomer]

It reads 14.4v when charging and 12.6v when not charging or when engine off.
Sounds like you had a dodgy connection. It's a common issue on these.