1982 FJ43 wiper motor wires

[GrooGrux69]

Hey y’all. I’m rewiring my FJ43. I e had many mysteries I e had to solve. Now I have one with the wiper motor I can’t solve so any input would e good. Also I have referred to several wiring diagrams of different years. There is a fourth wire I can’t figure out what it’s for.

1. Blue white is ground
2. Blue red is slow speed
3. Blue and black is fast speed
4. Solid blue no clue.

All of the diagrams say L for light blue. All of these are a royal blue not light. The fourth wire doesn’t go to ground, power doesn’t do anything and current does not present in it in switch closed, slow or fast speed. What the heck is it? I guess I don’t need it but it’s bugging the heck out of me.

 

[charliemeyer007]

Is it the return to "home" power, so the blades go to home when you turn them off rather than just stop where they are?

 

[GrooGrux69]

OK, I’ve gone down 12 different rabbit holes trying to figure this out. The extra wire has got to be the park wire. I found some YouTube videos that showed how to use a five pin relay to make it park. Oddly enough when I wired the relay Per the videos instruction, the switch behaves the exact same way as if I just directly wire slow to slow and fast to fast neither one of them park.

Does anyone know if a 1982 Land Cruiser windshield wiper motor has an internal relay for parking?

I’ve spent so much time on this. I’m gonna kill myself if I don’t figure it out.

 

[3_puppies]

wiper motors are different, simple when you understand how they are wired
they have constant + power and use the switch to control the ground
4 wires
1 +
1 - low speed
1- high speed
1- park

can't say what colors are what as I am at work
no relays needed,
if park isn't working the contacts in the motor need cleaned

 

[Engineer8000]

Internal contact closes to brake/park the wipers.

 

[Coolerman]

Normally in USA Fj40's Blue/White is the Park wire and Blue is the +12V input with Blue/Red GROUNDED for Lo speed and Blue/Black GROUNDED for Hi speed.
You can read about this here.