Ford: door locks, wipers, rear window, ford explorer xlt, wiper blade

Question
hi, i have a ford explorer xlt 98 and when i bought it at an auction, some things i didnt really pay attention to which now are bothering me.  Front and rear wipers work, but at some points of the glass they dont touch/wipe, i even replaced the wipers and still same thing, i even tried bending that leg that moves the wiper, it helped a little, do you think i have to replace that part that actually moves the wiper blade.  another problem i have is the rear window that can be opened instead of opening whole back trunk, a window on the trunk.  it doesnt open, can that be a lock problem, because i tried opening with the key and it doesnt open.  also, my antenna for some reason stopped going up and down, it only stays up and thast it, radio works, but before when the car was off it woudl go down and when the car turned on it would go up, now its only up.  also when i drive and hit a little bump, pothole, i hear a rattling noise in the back of the car.  the main problem i got at least for me, is that my stereo display doesnt show anything, stereo works, plays everything, but doesnt show anything. as you can see i got a lot of little problems with the car.
Thanks for your help,
Alex

Answer
as far as the rear wiper goes you have to replace the arm the spring inside is week and won't pull it tight against the glass. in order for the rear glass to open the rear wiper has to be all the way down.if not it will not allow the glass to open.remove the rt rear 1/4 panel and make sure the ant is grounded and ck the amp. to see if it is tight and the connections are tight also look to see if it's been hit back there.