Looking for how to test an apparent rebuilt (blue metallic paint on motor base) wiper motor in my 69. Motor was running very slowly and only on one speed and now doesn't seem to work at all. Before ordering a new one, I'd like ton verify if it's the motor or a wiring/switch issue. Can anyone tell me what terminals on the motor to test with 12V+? There are three terminals: two side by side, one of which has two black with yellow stripe wire, and the other which seems to be just black. then there's a separate single terminal with a black wire with single light blue stripe on it. Thanks!