I have spent a ton of time and gone through 2 switches trying to get my wipers to work. I know the motors are good as I have powered them up. I'm not real swift at testing but both switches seem to work good. The rear wiper doesn't work on either switch and the front wiper goes to high speed as soon as I turn the key on and it only goes to the low speed on the other switch( but I can turn it on and off) what the heck! I think there is something I'm not understanding here.