Swb wiper motor wiring - advice needed b4 bang heads at the workshop

[mundo-kombi]

Hi All.

I have just collected my wiper motor for my 65 from the workshop. It was blowing a fuse as soon as the switch was flicked.

I have it connected as follows:
53: BLACK/PURPLE.
53A: RED.
53B BLACK/YELLOW.
53E: BLUE
BROWN earthed to the body of the wiper motor.

Upon connection, I find that ONLY THE SLOW SPEED IS WORKING - wiper switch position 1.



Before heading back to the workshop, I want to ensure I'm not missing something. Using my multimeter, I found the following:

POSITION 1
53/BLACK/PURPLE: 12V
53A/RED: 12V
53B/BLACK/YELLOW: 12V
53E/BLUE: 0V

POSITION 2
53/BLACK/PURPLE: 12V
53A/RED: 12V
53B/BLACK/YELLOW: 0V
53E/BLUE: 12V

POSITION 3
53/BLACK/PURPLE: 12V
53A/RED: 12V
53B/BLACK/YELLOW: 0V
53E/BLUE: 0V

I want to try and get a better understanding of what's going on. According to a Google search, the numbered connectors are:

53 wiper motor + in
53a limit stop +
53b limit stop field
53e stop field

But I don't know what this means. Can someone explain? Which are the terminals for the 3 speeds? And what do LIMIT STOP, LIMIT STOP FIELD & STOP FIELD MEAN? I guess this relates to ensuring the motor returns to its stop position, but surely not all 3 connectors?

My limited brain power tells me that:
RED is slow speed
Blue is medium speed
Black Yellow is high speed (and if this is the case, my multimeter's reading of 0 VOLTS at switch position 3 suggests a switch or wiring problem)
Black Purple is PARK.

Any advice would be appreciated so that I can say, with confidence, to the guys at the workshop that they still have some more work to do.

Thanks!

[John912]

According to the schematic in my Driver's Manual for 65 911, Edition 1/65:


RED is Power from fuse block (#4)
Blue is position #1
Black Purple is position #2
Black Yellow is position #3

[mundo-kombi]

According to the schematic in my Driver's Manual for 65 911, Edition 1/65:


RED is Power from fuse block (#4)
Blue is position #1
Black Purple is position #2
Black Yellow is position #3

Hello, John.

Thanks very much helping me out. I too have a 65 owners manual, but I couldn't see from the wiring schematic which wire representd which speed/switch position.

Does your diagram look anything like this:

[John912]

Yes it does, where I assume based on switch positions shown on page 40 where:

0 = off
1= slow
2 = medium
3 = high speed

[mundo-kombi]

Yes it does, where I assume based on switch positions shown on page 40 where:

0 = off
1= slow
2 = medium
3 = high speed

Thanks, John.

I'm going to pull the switch apart and check everything is OK there. And if that is the case, then I can go ack to the workshop with the motor and ask them to investigate further.

[John912]

Given all that goes on in that multipurpose switch, there's a good chance the problem lies there. Remember, there's a plug connection under the dash you can use for diagnostic purposes. Happy hunting!