BLOWER MOTER!!!!! 1972 280se 4.5

Well, I think I'm going to give up on the heat for this vehicle. I seem to have other elec. problems as well. no horn, radio, . As far as the heater blower, Ive checked and replaced all fuses, and cleaned fuse terminals. I've removed the cowl and cleaned out the blower by hand . It was slightly hung up on debree, but it now turns freely. I've also replaced the relay that directly relates to the blower moter. I don't know what else to do? anybody with alternative suggestions, besides the obvious removal nightmare, please speak up!!! Thanks for listening[]