delt

I have an 89 Maxima and I am sick of all the problems I'm having with the Bose system. I decided to bite the bullet and replace the whole damn thing. How am I supposed to wire the new headunit in? What about the speakers? I know you have to get a $50 adapter to run an aftermarket HU with Bose speakers but what about if I'm replacing the speakers too? Am I going to have to run all new speaker wire? I'm pretty lost with all this and would appreciate some advice.