Wiper switch funkiness, I'll start with this problem Options

[ThePaintedMan]

Hello again,
I've sent Kevin a PM on some of the issues I'm facing with my turn signals and wipers, but perhaps I need to focus on one problem at a time. Currently, when I move the wiper switch up one notch, they function at slow speed. However, when the switch is up all the way, they stop in place, as in, they don't return. This is on a base '73. Any ideas?

[Valy]

The black-purple wire from your switch (terminal 53b) powers the wipers in high speed.
You need to find out if it's the switch, the wire or the electrical motor.

I would start by checking that the switch is making an electrical connection between the red-black and black-purple when in high speed position.

If you have contact, then check that you get 12V at the wiper motor connector. It's a bit of PITA to access it but you can do it. I think that removing the air duct on the passenger side helps.

If you have 12V on the black-purple, you're in major problem. Try to clean the contacts and check if it helps. If not, you'll have to pull the gas tank to take the motor out.