Wiper Motor - make and model

[ArthurH 7]

I'd like to find an internal wiring diagram for my wiper motor:

 

Are all 205s fitted with the same motor?   Mine is from a 1994 NA Diesel

 

Does anyone know the manufacturer and/or part number (mine has no marking - the paper label has faded to blank)

 

 

TiA

 

 

[welshpug 1,662]

Basically yes, a valeo unit.

 

Shared with many other peugeot citroen vehicles with small differences in spindle nut and spline sizes.

[petert 592]

You may find this information handy, from when I wired in a switch in my race car.

[ArthurH 7]

Thanks Mei.  You were previously kind enough to send me the pin outs:

 

But as I am designing a new fuser/relay board, I would still like to find an internal wiring diagram for the motor.  Does anyone have that, or even a part number I could start from?

 

[ArthurH 7]

Thanks Peter, I think our posts have overlapped.  Yes, the new loom /fuse relay board is for our race car as well.  I had previously been advised to use two relays, one for each of the speeds, which is what I have implemented on both the switch panel and the fuse board - but now I come to wire it up, I am struggling to make use of those two 'outputs'.  All the diagrams I had found online related to the Lucas motor used on MGs and Triumphs.  I had found the diagram you have posted but I was hoping that only applied to Lucas motors as I can't see how I can connect it up without a major redesign of the relay board and loom.

 

Also, in that diagram, when it is switched to fast speed, is the power going through the relay at all?

 

In your spreadsheet, is PUG synonymous with Valeo?

[SRDT 184]

Yours looks like a Valeo but you can also find Bosch units made in Spain, at least on LHD cars.

 

As for the magic inside it's mostly that the internal park contact will ground pin 5 when on park. It should be common but not all wiper motors do this.

Also on some older cars (not 205) the motor need both fast and slow pins to +12V to go slow so diagrams found online can be confusing. Lastly on some cars (again not 205) wiper motors don't have a slow speed and it's the intermittent relay that has many settings to conpensate.

Edited December 23, 2024 by SRDT

[ArthurH 7]

Thanks Baptiste.  Although it will take me a while to digest these circuits, I do think it gives me what I have been looking for.  Before committing to any redesign, I think I will 'breadboard' the components to check out the logic.

 

 

 

[petert 592]

7 hours ago, ArthurH said:

Thanks Peter, I think our posts have overlapped.  Yes, the new loom /fuse relay board is for our race car as well.  I had previously been advised to use two relays, one for each of the speeds, which is what I have implemented on both the switch panel and the fuse board - but now I come to wire it up, I am struggling to make use of those two 'outputs'.  All the diagrams I had found online related to the Lucas motor used on MGs and Triumphs.  I had found the diagram you have posted but I was hoping that only applied to Lucas motors as I can't see how I can connect it up without a major redesign of the relay board and loom.

 

Also, in that diagram, when it is switched to fast speed, is the power going through the relay at all?

 

In your spreadsheet, is PUG synonymous with Valeo?

Correct. I took that Lucas diagram and reverse engineered it to suit the PUG (Peugeot Valeo) 205 motor. It does indeed just use direct +12V for fast via wire 31A & Pin 1. You could add a 2nd relay for that, or just use the oem relay SRDT posted.

[Gohn 68]

[ArthurH 7]

I have a problem and I really hope you guys can spot what I have done wrong.  As I said at the top of this post, I have already invested significant effort into a two relay design and as Peter says, that should work.  I have two problems but I assume there is one root cause.

Initially, I connected the battery, switch, and motor with temporary fly-leads and no relays.  Everything worked as it should, even the autopark (manually connecting the slow and park leads at the moment of turning off the power).

 

I then connected the components to my relay board.  The two problems are: auto park doesn't work, and the slow relay fuse blows every time I turn the switch off.  I have gone through a LOT of fuses.  I can switch it to slow and the motor spins as it should, I switch to fast, the motor spins faster as it should.  I can switch back and forth between slow and fast as much as I like and for as long as I like, everything works, but when I switch from slow to off, the fuse instantly blows (I have gone up to 30A fuses - they still blow).  If I remove just the park wire, everything still works and the fuse doesn't blow, but of course, it doesn't auto park.

 

 

 

This diagram shows how it is connected.  I hope you will agree this is a more 'conventional' way of using relays.  I have tried to draw it to match the original circuit diagram to make the comparison a little easier.  Obviously, something is wrong but I really can't see it.

 

There is (at least) one inaccuracy in the drawing.  The switch is a side/headlight type switch, so the slow relay remains powered when the fast is energized.  Remember, the switch works fine with no relays.  I have even removed the fast relay and directly connected to power as per the original circuit diagram, which works just as well as with the relay.

 

TiA

[ArthurH 7]

Typical isn't it.  As soon as I posted, I could see the problem.  My 'slow' relay is connecting power to pin 5 when I turn the switch off.  And as Baptiste says above, that has been internally grounded.  I think I just need to reverse the wires on pins 30 and 87.

Edited Wednesday at 08:28 PM by ArthurH

[SRDT 184]

You should buy some very cheap circuit breakers from China to replace the fuses while you tinker with the circuit.

Once it works just switch back to regular fuses for peace of mind.

[ArthurH 7]

Thanks, I wish I had bought some before this issue , I will anyway, there is always 'next time'.  This particular issue is resolved - reversing the wires on pins 30 and 87 of the 'Slow' relay did the trick