Wiper Wiring

[Stewart]

Can somebody help with a wiper wiring diagram please,have a mini wiper motor with park and a rotary durite switch with terminal marked B,P,H and L which wire goes were and does it require a relay.I have a diagram that shows what the wires are from the motor but not to a relay or the switch.

Edited February 22, 2015 by utuber

[Longboarder]

Switch

B - 12v live or ign live

P - Wire to 2 on motor plug

L - Wire to 5

H - Wire to 3

 

Motor plug

1 - Earth

2 - Wire to P

3 - Wire to H

4 - 12v Live

5 - Wire to L

 

No relay.

Wire colours in pic are old sierra loom colours. Use whatever colour wires you have handy but make a note of them so you can repair them in the future.

 

Nigel

Edited February 22, 2015 by Longboarder

[Stewart]

Thanks Nigel for that tried mocking it up as you suggest but the park does not appear to work it just stops immediately when switched off

Stewart

Edited February 22, 2015 by utuber

[Guest Ian & Carole]

I think the parking cam has failed then , they are available from ebay.

 

http://www.ebay.co.uk/itm/CLASSIC-MINI-WIPER-MOTOR-PARK-SWITCH-FOR-AUSTIN-MORRIS-BL-AND-ROVER-MINI-/291267618521?pt=LH_DefaultDomain_3&hash=item43d0e726d9

[Longboarder]

Sorry. can't find a wiring diagram for park with the durite switch anywhere. The motor is expecting a 2 - 5 link in the park position and power on 4. I can't find enough to work out the internal connections clearly in the switch. The lucas rotary wiper switch does make the right connections.

 

Nigel

Edited February 22, 2015 by Longboarder

[fry61]

The park switch is prone to failure due to collecting water & the contacts corroding.

[Stewart]

New parking cam switch thingy just arrived put it connected it up and its still the same switch it off and it stops dead

[Longboarder]

Sorry. can't find a wiring diagram for park with the durite switch anywhere. The motor is expecting a 2 - 5 link in the park position and power on 4.

I was saying the durite switch does not make the correct connections for the mini motor so it won't park it. I can't find a diagram or think of one which would allow it to do this although it clearly is used in this context and does work when you know how. The lucas rotary switch does.

 

Nigel

[fry61]

If Nigel hasn't got solution !!! ( Is there a ign/live feed direct to the cam switch?) Cam switch breaks this feed every revolution of main gear wheel but is ignored by motor as long as wiper switch is closed/on.

 

An no you're not to retire from electric puzzle solving just yet, Nigel.

[Stewart]

the connection to the motor is through the cam switch if there was not a live feed surely the motor would not run at all, and i cannot find a rotary lucas wiper switch

Edited February 24, 2015 by utuber

[jaimo]

the switch to search for is by my guessing could be wrong would be the classic mini wiper switch

 

 

[Stewart]

there is a circuit between the live on the switch and the park terminal when the switch is in the off position,the cam switch has been replaced,the plastic wedge on the back of the drive wheel is in place,still no park is it posible that park would only work when under load???

[Les Welsher]

Was thinking of how to use a relay when you said that the park terminal was live when the switch was off, then I stumbled upon this

 

 

 

Hope this helps

 

Les

[Stewart]

Thanks Les dont know were you found that I thought I had searched everywhere sadly though that is the way I had wired it but still no park.

[Longboarder]

First impression is that it should work. He has deliberately wired it to park at fast speed which is a bit odd. I would wire it to park on slow speed. So swap the wires to L and H. So L (slow output from switch) to 87A and relay 30 to 5. H (fast output from switch) to 3. The vital part is 30 output from relay must go to the slow terminal on the wiper motor.

The relay is one that makes the 30 - 87 contact when powered and 30 - 87a when unpowered.

In the P (Wipers off) position 86 is powered and connects relay terminals 30 to 87. This allows the ignition live feed 12v to 4 to feed through the motor park device to 2 and out to 87, through the relay to 30 and out to 5 the slow motor input where it runs the park cycle. When the motor reaches the park position the cam breaks the 4 - 2 link and stops the power. (Even though the relay is still energised.)

When wiper switch is in L or H positions the relay is not energised so makes the 30 - 87A contact.

In the L position, L is connected to terminal 87A which is connected in the relay to 30 (as the relay is now unswitched having lost its P supply) and 30 goes to 5 the slow speed power input on the motor socket.

In the H position H is wired direct to the 3 terminal for fast wiper speed.

Theoretically if the relay works fast enough and the motor has little momentum then this should work. If the relay is too slow it should just keep wiping when you switch off. You said the wipers just stop with your previous tries. Wrong fail mode so it wasn't wired quite right. Give it a try and note it's critical to get all the connections correct.

Redrawn below. Important to use ignition live supply or the relay will be a constant battery drain.

Cracking solution Les.

 

Nigel

Edited February 25, 2015 by Longboarder