1998 Corvette wipers comes on while in the off position. I changed the motor and the switch. Is there a relay some where? What should I do next?
The problem is probably your Wiper Motor Pulse Board Module (ACDELCO pn 12367295). This will control the behavior of your wipers. If any of the board has corrosion or a bad part on it, weird things can happen.
If you just replaced the wiper motor, this should have been included with it. It may be that you got a bad one.