Ok we pulled out my 10 bolt open drum PoS and swapped in a 9 bolt disc rear, but now my brake light is on, you know the ebrake light. We thought we over adjusted the ebrake to tight and thats what the problem was but we loosened it yesterday and the light is still on... what would be causing this? and no it wasnt on before the swap

 

air in the lines right after the master cylinder.

 

Yep, bleed the brakes and check for leaks.