bad ? 67 wiper switch

[peglegs]

with a test light check i have power into & out of the switch can the switch still have a bad hi/lo neither works.

[cparman]

If you jump the wiper motor will the wipers work? IMO, If you have power in and out of the switch it is good?? With the key on, check to see if you have power and ground at the motor. You can do this with a test light by clipping the test light to the 12v+ side of a battery to check for ground at the motor, and the negative side of the battery to check for 12v+ power.

[fixit-p]

The wiper motor is switched on the low side, it has power supplied to it and the switch provides the ground, I would check to make sure that the dash is grounded.

[VetteVet]

Look in the FAQs at the top of the electrical forum you are posting in and the first FAQ is on testing the wiper motor.
Here is the link if you are lazy like me.
http://67-72chevytrucks.com/vboard/s...d.php?t=413551

From the link.

Two speed wipers with washers were available as optional equipment on early 60's GM vehicles. They became standard equipment in 1965 or 1966. This system still uses the same basic wiring principles as the single speed wipers. There is still a power wire that feeds the wiper motor whenever the ignition switch is on. Except now there are three wires going to the switch. The switch grounds one wire for high speed operation. Two wires are grounded for low speed operation. The third wire grounds the washer solenoid to activate the washers. Note that many '75 and later vehicles used a small electric washer fluid pump mounted to the reservoir instead of the older wiper motor driven pump.

[C10CORIE]

The switch shouldn't have power running to or from it.......it is a grounding switch.

Make sure it has a good ground contact to the dash ( ie remove paint from the back of the dash)