Blower motor/pw/pm

hey guys first of all, my name is chuck, i am new to this board, and VERY new to E30s, but i know my way around cars pretty well...

well just so you guys are aware i have been searching quite a bit and have found a couple things on this issue but so far no direct answers for me...

the car is a 1991 318is, the blower motor, the power windows, and the power mirrors dont work, i have seen some people on this forum suggest something about k7? im not sure what that is, but i suppose thats a possibility...

and i have also seen some suggestions about a ground on the starter, but dont know anything about that either..

i have replaced the blower motor, tried a couple different switches on the windows, and also tried running a direct power line to the blower motor, but could only get it to work intermittently..

its the dead of winter here in missouri, and without having a defroster, its down right dangerous... not to mention freaking cold!

i really do appreciate any help guys! if anyone could link me to a thread maybe or just explain to me what i need to do, id be so grateful!

looking forward to a long e30 ownership and hopefully a long stay on this board!

THAAAANKS GUYS:D