I got this old model car last december.

The only problem i have is with the electrical stuff.

1) The car rear speakers dont work (sometimes work - so loose connection i guess)
2) The driver side controls dont work :

a) The passenger side window doesnt work from the driver side nor passenger side.
b) Power lock doesnt work
c) Window lock doesnt work.
d) The driver side window has some loose connection (but usually works)
e) The driver side door speaker doesnt work.

I was assuming there might be on common wiring problem. Can someone help me regarding where it might have been and how i could repair it?
Thank you

 

Thread moved to the tech section for more views.

 

not a common wiring problem, i say open then door and inspect your wires, they could be rigged. its in that rubber boot in the door jam.