sounds like you have some wiring issues there try starting with why theres no power to the fuse box. check the fuseable links under the hood and all fuses 1 at a time. it's hard to say because if it was just brake switch the lights will stay on with or without the key in. I would suspect somthing to do with the motor swap. and not getting all the grounds in the right places or worst someone chopped the harnes as a 2k motor is OBD2 in a OBD1 car.