Indicator/light problems

[Motorcrossmooey]

Hi I've just finished restoring my nc29 took it for its mot and it failed on the lights dulling opposite to the indicators I thought it was an earth been through all of them ,New battery etc ,When I hold the revs at about 4 grand it disappears any ideas maybe rectifier?

[slyshot]

Could be, have you tested the voltage across the battery at tickover and then around 3k to see if you are charging properly?

even with a good reg/rec the battery can be on its way out, is it very old?

[Motorcrossmooey]

It's a new battery but I haven't charged it what should the voltage be at tick over and 3k iknow everthing settles down around 3/4 k