ok this weekend i final got round to changing the engine in my ph2 astra gsi ( was a ecocrap)

so got the redtop running great, but the battery light is always on.
i have put a meter aross the battary
engine off i get 12.7 volts
and engine running i get 14.3 volts

so she is charging but why is the light still on any ideas ???

also i am getting fault code 57 idle speed control valve interupion but she ticks over fine ????

plase help i have to drive to bournemorth in the morning !!!!