Rear wiper

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Owent2005
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Car(s): Ford Capri 1983 Mk3 1.6LS

Rear wiper

Post by Owent2005 » Mon Dec 02, 2019 2:17 pm

Hello!

Next on the list of unearthing electric issues is my rear window wiper. The motor has two wires, one I traced to the connection at the boot jack, the other as the picture shows goes to nothing! Does the second wire go to earth or a second connection somewhere else?

Thanks,

Owen
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D366Y
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Re: Rear wiper

Post by D366Y » Mon Dec 02, 2019 2:23 pm

The rear wiper will only work when the boot lid is closed - when you open the boot, on the left hand side there is a small metal disc in the boot itself that connects to a small part of protruding metal (much like the courtesy light on the other side) that is sprung loaded into place.

The metal on the boot needs to be connected to the other part sticking out of the bottom otherwise it wont work. If it still doesn't work when it's closed try sanding both bits to clean them up a bit, and checking the connections to both of these parts

Cheers
Danny

Owent2005
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Re: Rear wiper

Post by Owent2005 » Mon Dec 02, 2019 2:29 pm

That’s great Danny thanks, I hadn’t noticed that at all, any ideas where the second wire goes to though, does it go to the breaker switch you mentioned?

Owen

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D366Y
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Currently full up and no more space but I still want a 2.8...
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Re: Rear wiper

Post by D366Y » Mon Dec 02, 2019 2:33 pm

From memory there was an earth that went onto one of the screws holding it in place, and another to the beaker in the boot lid, but without taking my one apart again I can't remember what else it looks like off the top of my head I'm afraid

cheers
Danny

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D366Y
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Currently full up and no more space but I still want a 2.8...
Location: South Bucks

Re: Rear wiper

Post by D366Y » Mon Dec 02, 2019 2:42 pm

Just thought - do you have the connection on the boot strut? That could be where you other wire should be going to if it's not connected and not working

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stevemarl
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Re: Rear wiper

Post by stevemarl » Mon Dec 02, 2019 4:12 pm

Don`t forget, there are 2 power leads to a wiper, one from the `on/off` switch which starts the motion, once moving it`s then powered from the `self park` supply which runs it right through the arc and back to the start (so if it gets back there and the switch is then `off`, it stops in the parked position). IIRC the power through the LH strut is the `self park` power supply, the copper button connector on the tailgate is the `on/off switch` power supply. I`m sure if the strut supply is interrupted you`ll just lose the self park, the motor will run as long as the dash switch is on.

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Re: Rear wiper

Post by Mc Tool » Mon Dec 02, 2019 6:39 pm

Not sure but I think that if the wire is off the strut they won't move off park. Beats me why they didn't just feed all the wires ( window heater Inc )thru the rubber hose thing at the top of the door . The wiper would still opperate with the hatch open but I can't see why that would be an issue.....heaps of other cars seem ok with it
you know it was a goodie when the end is stickin up out of the water

Bug
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Re: Rear wiper

Post by Bug » Tue Dec 03, 2019 8:49 am

From my experience, if you take the connector off the left strut then the wiper will work but will just stop wherever you switch it off.
Either way, you should have an earth on the body of the motor, a power supply from the 'penny' connector on the left side of the tailgate, and a self park earth attached to the left strut.

Owent2005
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Re: Rear wiper

Post by Owent2005 » Tue Dec 03, 2019 10:05 pm

Thanks for all the tips, I’ll let you know how I get on when I get chance to look at it next!

Owen

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Re: Rear wiper

Post by Mc Tool » Wed Dec 04, 2019 5:44 am

Bug wrote:
Tue Dec 03, 2019 8:49 am
From my experience, if you take the connector off the left strut then the wiper will work but will just stop wherever you switch it off.
Yeah, that makes more sense
you know it was a goodie when the end is stickin up out of the water

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