Hello..Now that you all have helped me fix a couple of my problems.......I have another..I've read some of the post on non-working defrosters but haven't quite got an answer yet..My defroster is not clearing my windows properly. Now, my a/c unit don't work ( at all) but I wonder how this feat was accomplished with trucks with no factory air on the trucks..?..I read it may be a vaccumn problem..Well, I know I have some broken lines ( man, those thin hoses.....)..That canister that looks like a blimp, exactly what does it do and I don't think mine is connected...!..Would love to put some better, thicker hose up here..Anyone have suggestion on the best replacement for this...Thanks..!