I have a 85 GMC 3/4 ton. I left the key a click over the other and drained the battery. I had it hooked to a battery charger for 2 days and nothign worked. So today I ended up replaceing the battery, the starter, starter solenoid, and just replaced the coil. When you turn the key over to install it, the only thing that works are the windows, stereo, and the ac pump clicks. Doesnt turn over or anything. What could be the problem??