Wiper motor

[krawler1978]

Ok I'm a newbie here i have a 1979.gmck25 4x4 that I'm building in to a crawler truck my windshield wiper motor has 3 wires I'm not sure how to wire it to a 3 way toggle switch and also the windshield washer motor too i have a universal wiring harness Thanks for any advice

 

[83Stepper]

Best way is to get the specific wiring diagram for your truck http://forum.73-87chevytrucks.com/smforum/index.php?topic=11766.0

Power toggle on, low speed/high speed and push button for washer. Personally I'd upgrade to the 84+ washer bottle, much simpler design and it's not using the original wiper motor washer pump.

 

[Sad Sack]

, guys here will want pics

 

[Jgonick]

Wiper motor works by grounding certain wires at switch. I think for 79 (wire colors changed sometime around then) ground purple for fast. Gray for slow. Blk/light blue to park the wipers(off). Ground pink for washer. The motor and washer should have constant power by a white wire coming from fuse block.

Search the forum- a lot of info can be found.

-LINK- to service manuals and wiring diagrams