My son got an 84 chevy k10. At first it kept blowing the fuse to the wiper motor then just burned up motor. We have replaced 3 times in one year. Any advice on what could be causing this?

 

The only thing that I know that makes the wiper work or not on that model is the printed circuit board on the wiper motor itself. There is 3 torx screws that hold this plastic cover onto the front of it. DO NOT PULL WIPER MOTOR!

When you take the cover screws off, no worries, nothing will fall out. You will look at this plastic board with wires in it and take a soldering gun and reheat the connections. When the motor runs, it twists this board all the time and breaks the contact soldering inside the cover. After you resolder the joints, reinstall, and your issues are over! (the aftermarket world sells you a reman wiper motor but NOT the circuit board!)