1994 gmc c1500 stepside schematics'' for electrical or wiper controls. wiper blades not working at all. possible schematics? problem solving

No relay.
Headlights are powered directly from the headlight switch.

Inside the wiper motor there's a little computer circuit board. That's most like is your problem. Replace the wiper motor and you should be good.

Electrical system, un connect your battery then reconnect

go to an accredited auto electrician for electrical work
it may be a switch problem but I think that there is no power to the light relays ( switch or fuses)
if that model has a light control module , it could be that

The Wiper Control Rod under the cover has a Push on Pivoting Arm and the Ball Broke and will not work the wipers until it is replaced

REMOVAL & INSTALLATION
(see Figures 1 and 2)

To remove the arm from the pivot, lift the arm to permit the latch to be pulled out to the holding position and remove the arm from the pivot with a rocking motion.

Fig. 1: Mount the wiper blade/arm as shown-Dakota models

Fig. 2: Mount the wiper blade/arm as shown-1994-96 Pick-ups

When installing the arms, the at-rest position of the blades should be determined before pushing the arm onto the pivot. For Dakota trucks, the tip of the driver's side blade should be 0.51-2.63 in. (13-67mm) above the cowl panel and the passenger's side blade should be 0.94-3.06 in. (24-78mm) above the cowl panel. For 1989-93 Pick-ups and Ramchargers, the driver's side blade should be 1.84 in. (47mm) above the windshield weatherstripping at the heel of the blade; the passenger's side blade should be 2.24 in. (57mm) above the weatherstripping. For 1994-96 Pick-ups, the wiper motor must be in the PARK position and the wiper blade should be about 0.85 in. (22mm) from the upper edge of the black-out areas at the base of the windshield.


Hope this helps to solve it.

Try the switch and the relay. Most likely its the switch.

At the mounting area of the blade to the rotating wiper arm is a tab that has to be pushed in and held to remove the wiper blade. The tab will be on the wiper blade's center housing ansd is very small to see

wiper motor boards go bad in those motor assemblies. You can replace just the board in most applications.

hi from uk re wiper blade you only have to swivel blade enough to access the press clip that holds the swivel mount of the blade then while pressing clip pull wiper blade down out of the wiper arm U type hook replacement is in reverse make sure you note the old blade fits so you fit new one same way ?