Voltmeter reading low

[MISFIT 1]

I messed with it yesterday and things are strange. When I start the motor the voltmeter reads 11V if I switch off the fuel pump it reads 13.5V. With everything on (headlights, fan, fuel pump) I am around 8V. New battery installed last week

[Gaz64]

Are those voltage readings with a multimeter at the battery, or at the dash voltmeter?

Sounds like new alternator to me.

I had one fail that gave no warning light.