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Rear electric windows

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Old Jan 15th, 2019, 21:20   #1
griston64
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Default Rear electric windows

How easy is it to change from manual ( wind up ) rear windows to electric ?

If I got new rear doorcards from a car that had rear electric windows is it just a case of fitting an electric winding mechanism into that door and plugging in somewhere ?

I'm asking as I have a chance of mint non wrinkled door cars from a car that has rear electric windows and have old skool windy ones
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Old Jan 15th, 2019, 22:43   #2
Laird Scooby
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Don't you want your rear passengers to kepp fit Mark?

Joking aside, you've asked a very big question there. I'll try and create a list of what you'll need, assuming you only have the basic front window set up.

Rear window electric regulators (left & right)

Rear door looms (L&R)

Rear window door cards including window switches (may as well get the front door cards from the donor to match)

Drivers door window switchpack (gives driver control over rear windows

Drivers door loom for 4-window operation

Any other loom not already fitted to link from drivers window switchpack to rear doors

I think that's everything - now for the good bit!

There's a chance that the original loom has the wiring for all 4 windows to be electrically controlled in which case, you'll probably only need the window regs, rear door switches and drivers switchpack. You'll need the door cards as well of course but that would be for either option.

Easiest way of finding out what you'll need is to remove the drivers window switchpack and have a look to see if the wiring is there for two extra switches to plug onto it. Then remove the door card(s) from one or both rear doors and see if there is wiring there for the window switch in each and the motor.

That's about the only way you can be certain of what you're starting with, until you know that you won't know exactly what you need.

I think i've covered everything in the list above, apologies if not but it gives you a good starting point for checking to see what you'll need.
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Old Jan 15th, 2019, 22:49   #3
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I'm planning on taking all door cards which will have all switches in and then rear motors/regulators. I'm hoping wiring will be there but I think it will be a bit suck it and see. Fingers crossed

Thanks Scoob
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Old Jan 15th, 2019, 22:53   #4
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I wasn't really planning on doing this just yet as I still have mechanical stuff I want to get sorted but when non wrinkled doorcards come along you've got to grab em
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Old Jan 15th, 2019, 23:55   #5
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Quote:
Originally Posted by griston64 View Post
I wasn't really planning on doing this just yet as I still have mechanical stuff I want to get sorted but when non wrinkled doorcards come along you've got to grab em
Always the way! Things that are planned get pushed down the list because something that needs rare parts and is on the list somewhere just got shunted up because those rare parts appeared as if by magic!

Time is a wonderful tool for getting jobs done as well!
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Old Jan 17th, 2019, 17:52   #6
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I've done this on my 740.

It's fairly straightforward - just a case of getting the right parts. My 740 had the wiring for the switch on the driver's door, but I needed both rear door wiring looms for doors with electric windows. You'll be kicking yourself if you don't grab them from the donor car

Note that window mechanisms are different between 740 and 940, at least some years - pretty sure I've a 940 one in the shed if you're interested.

Everything else is as Dave says - reckon on it taking 2 hours in total as you have to remove the B pillar trims.
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Old Jan 17th, 2019, 18:13   #7
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Originally Posted by tofufi View Post
I've done this on my 740.

It's fairly straightforward - just a case of getting the right parts. My 740 had the wiring for the switch on the driver's door, but I needed both rear door wiring looms for doors with electric windows. You'll be kicking yourself if you don't grab them from the donor car

Note that window mechanisms are different between 740 and 940, at least some years - pretty sure I've a 940 one in the shed if you're interested.

Everything else is as Dave says - reckon on it taking 2 hours in total as you have to remove the B pillar trims.
I may well be. I'm getting all doorcards , switches and rear motors from donor car. I will have to remember to get looms as well

This will be a spring job


Thanks chaps
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Old Jan 17th, 2019, 19:42   #8
Laird Scooby
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This will be a spring job

But which spring!

If you're plundering the donor car for the motors/regulators, door cards, switches, door looms etc Mark, it might pay to also get the B-post trim, any other trim you might have to remove, the convoluted rubber trunking between the doors and B-posts and anything else that you might need for yours at some point, even if it's the wrong colour.

It's easier to recolour trim that is intact than repair broken trim or find a bit in the right colour when you're desperate!
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Old Jan 17th, 2019, 20:32   #9
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Quote:
Originally Posted by Laird Scooby View Post
But which spring!

If you're plundering the donor car for the motors/regulators, door cards, switches, door looms etc Mark, it might pay to also get the B-post trim, any other trim you might have to remove, the convoluted rubber trunking between the doors and B-posts and anything else that you might need for yours at some point, even if it's the wrong colour.

It's easier to recolour trim that is intact than repair broken trim or find a bit in the right colour when you're desperate!
I would tend to agree Dave but my car is getting more like Trigger's broom every day. I'd almost be as well having the whole car although that would definitely activate the divorce clause
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Old Jan 17th, 2019, 20:33   #10
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This spring ! which is just around the corner
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