Wiper Motor Tech

[Racer65]

Given the OEM wiper motor has been discontinued for sometime, and the sky ain't going to stop raining, I'm just getting started with a project to develop a plug and play wiper motor for the FJ40,

After some initial research, I ran into some unexpected findings with the "plug" (no pun intended). I would like see if anyone has been in these weeds before.

For the purpose of this thread, I'm only focusing on the '75 and later wiper motors fitted on the bottom of the windshield. There were two basic types:

1. '75 to '77 - Smaller motor
2. '78 to '84 - Larger motor

Both wiper motors have a 4 pin plug. Based on cross referencing a few diagrams, I came up with the following:
+1 = Low speed => Light blue wire with red stripe
+2 = High speed => Light blue wire with black stripe
B = Power => Light blue wire
S = Park => Light blue wire with white stripe

 

[Racer65]

The only problem is, the pin positions in Fig 12-43 don't match the actual wiper motor.

Here's what I found. The plug on the large wiper motor is wired as follows:

 

[Racer65]

The plug on the small wiper motor turns out be wired differently. Didn't know that before!

 

[Racer65]

Thoughts? @Coolerman ?

 

[cult45]

No doubt you'll be adding an intermittent option? Will these be available for the RHD market? And will you be redoing the 1968-1975 unit/s?

 

[Racer65]

No doubt you'll be adding an intermittent option? Will these be available for the RHD market? And will you be redoing the 1968-1975 unit/s?

Keep in mind where things stand now...Couldn't get my test unit working on the car, and need to down-size it to fit under the cover.

 

[ginmtb]

There is some weird wiring on the older motors (pre-75) that don’t match up. Perhaps this is a similar situation?

 

[lc69hunter]

I will be following this, as I am currently trying to rebuild mine out of the 69.

 

[samc2447]

The only problem is, the pin positions in Fig 12-43 don't match the actual wiper motor.

Here's what I found. The plug on the large wiper motor is wired as follows:

[/ATTACH]

This matches what I have in my 78. I replaced it earlier this year with a Volvo wiper motor following this thread and it fits under the wiper cover no problem.

Wiper motor from a Volvo into a 75 FJ40

 

[Mid TN]

Have not compared them, but a Toyota Mini truck or 4-runner wiper motor is pretty small and your brand loyal!
Connectors may even be the same? Just thinking out loud!