So I recently got a new battery, now the rear light in the dash that tells me my rear lights are off. Went outside to check if they were out but still fine, then I turn my key just a click before starting the car and it turned on but went I start the car it turns off again all other lights in the dash are functional so can find the issue help?

 

Did you check your brake light bulbs? could be those that are out.

 

Checked both and everything is working