Wiper switch wiring

[tk1218]

Working on a 74 with stock wipers. I have a generic harness that has 1 ignition hot wire for the wipers. I have looked at several diagrams and am unsure on how to wire the power to the switch.

Noted on a post from viperwolf that there should be a blk/wht and a white/black wires for power. My plug has 2 blk wires, might be dirty though, see pictures

Other diagrams showed power to an orange wire

Can anyone tell me how to do the power on the switch?

 

[904Bronco]

By looking at 4 of you wires on your wiper plug, those will go to the wiper motor. (Red, white, blue, and black)
That leaves the other two... or three

One goes to the washer pump and the other two need to have power. Power can be shared to the two points that need power from one source...

Maybe plug your plug into the back of the wiper switch and with a continuity tester you can figure out the last three...

https://classicbroncos.com/tech/centech-wiper-switch-connector

Check this out too.... It is for a Centech harness connections, but info can be used as reference