2004 Dodge Ram 1500 wipers, windshield & visibility problems

I was driving down interstate 65 in mobile, al doing a speed of around 65 MPH. Suddenly and without warning, my steering wheel locked-up and I was not able to turn the steering wheel left or right. Thankfully, there were not many cars on the highway and I was able to coast across 3 lanes of the highway, finally stopping in a ditch on an off ramp. The problem that occurred was the power steering pump popped off, wrapped around my serpentine belt, and cracked my head gasket.

While driving in rain my wipers often stop working on high speed which make it difficult to see in a down pour. Also my blower fan for the A/C defroster heater etc. Stops blowing when tilt wheel is moved to some positions. It has proceeded to the point of not blowing at all and sometimes will start blowing when I am not in my truck with the key out of the ignition. I was told by a dealer mechanic that it is a faulty ignition switch and that he has changed several.