Hello there!

 

after searching in the forum and other online sites, I cant find the answer to a problem I found when trying to swap wing mirrors on my Mk2 octavia. It’s a RS facelift with those huge and ugly mirrors, so bought a pair from a pre-facelift octy and found that the connectors and wiring are different. FL mirrors have 16pin conector and 6 cables, meanwhile pre-FL have 12pin and 7 cables. The color of the cableS dont match, and the new model are pluged into a control unit on the door (I suspect this is the main issue)

I would be very thankful if anybody had the wiring diagram for both models or even better, if anybody has already done this swap and knows how to do it. Thanks in advance!

Nobody out there?☺️

The number of wires varies by what functions the mirror supports, for instance a 'memory' mirror has extra wires than a 'non-memory' mirror and powerfolding adds an extra couple of wires.

 

If you want to check the OEM wiring, you can get wiring diagrams from erwin: https://erwin.skoda-auto.cz/erwin/showHome.do

 

Otherwise, I expect you can probably figure out most things with a multimeter or even your eyes ;)

16 hours ago, langers2k said:

The number of wires varies by what functions the mirror supports, for instance a 'memory' mirror has extra wires than a 'non-memory' mirror and powerfolding adds an extra couple of wires.

 

If you want to check the OEM wiring, you can get wiring diagrams from erwin: https://erwin.skoda-auto.cz/erwin/showHome.do

 

Otherwise, I expect you can probably figure out most things with a multimeter or even your eyes

Hi Langers2k!

 

thanks so much for your info, thats a handful of good help. Didnt know that erswin was opened to non-workshop people. Definitely, I’ll check it asap. And the multimeter option, I’ve already tried it but I got a bit confused (not as big electritian as I would like myself). I figured out most of the wires, mainly grounds, blinker and movement. But it freaked me out that while testing drivers door connector, the passenger’s mirror would move although having the mirror selector on “Left”😳. 
Anyway, thanks again for your help and sorry for my english!

 

ps: both mirror type I’m trying are non-folding, shouldnt they be “non-memory”?

Edited 13 June, 20205 yr by uniteunion

The memory function is separate to the folding function. If you have memory seats, you'll probably have memory motors

 

If you pull the mirror off the wing mirror, you can probably see where the wires terminate and therefore what each colour does.

13 hours ago, langers2k said:

The memory function is separate to the folding function. If you have memory seats, you'll probably have memory motors

 

If you pull the mirror off the wing mirror, you can probably see where the wires terminate and therefore what each colour does.

Oh, that’s one smart call! I’ll definitelly remove The glass from the mirror and look for the cables. Thanks again, I really appreciate!

On 14/06/2020 at 08:42, uniteunion said:

Oh, that’s one smart call! I’ll definitelly remove The glass from the mirror and look for the cables. Thanks again, I really appreciate!

 

Have you got any further with this?

 

I've just bought a pair of facelift mirrors, to swap for my pre-facelift, and found that the connectors are different too.  Both my sets are vRS spec - non-folding, non-memory.

 

I have only compared the passenger side and like you said the pre-facelift mirror has 7 wires (versus 6 on the facelift).  However, if you look carefully two wires are connected to the same pin (black and brown = ground), thus effectively only 6 wires.

 

I thought of two options:

1. Open them up and try to swap the innards over between the housings.  I haven't looked, but I'm not hopeful.
2. Make an adapter loom between the facelift plug and prefacelift socket in the door.

For option 2, I would need to match the different coloured wires to the correct function, so a wiring diagram would be useful unless you've managed to pair each wire.  In your exploration so far, I'd be interested to hear whether you think option 2 is feasible?  It might work both ways?!

 

P.S.  Just out of curiosity, is the mirror glass on your facelift mirrors blue tinted?  My pre-facelift are, but the facelift aren't

1 hour ago, mrhappy said:

 

Have you got any further with this?

 

I've just bought a pair of facelift mirrors, to swap for my pre-facelift, and found that the connectors are different too.  Both my sets are vRS spec - non-folding, non-memory.

 

I have only compared the passenger side and like you said the pre-facelift mirror has 7 wires (versus 6 on the facelift).  However, if you look carefully two wires are connected to the same pin (black and brown = ground), thus effectively only 6 wires.

 

I thought of two options:

1. Open them up and try to swap the innards over between the housings.  I haven't looked, but I'm not hopeful.
2. Make an adapter loom between the facelift plug and prefacelift socket in the door.

For option 2, I would need to match the different coloured wires to the correct function, so a wiring diagram would be useful unless you've managed to pair each wire.  In your exploration so far, I'd be interested to hear whether you think option 2 is feasible?  It might work both ways?!

 

P.S.  Just out of curiosity, is the mirror glass on your facelift mirrors blue tinted?  My pre-facelift are, but the facelift aren't

Hi Mrhappy,

 

I just finished the installation this evening. I’m drawing the wire diagram/pin functions. But long story short, pre-facelift mirrors have 7 cables although 2 of them (grounds for heating and blinker  ) go into the same pin. So actually, 6 pins are used in the connector. And in facelift mirrors, 6 cables are used (and 6 pins) but the ground is cable is divided into 2 inside the mirror housing (one end to blinker ground and the other to heating ground). 
Let me a couple days and I’ll draw the sketch into a clean diagram and I’ll post it here. My english might be confusing in the explanation above!

 

p.s: glass colors are the same in my case

I guess mine might be aftermarket glass. Shame. I like the blue tint. 

 

Would be very grateful for a diagram. I assume they are electrically the same then, just with different connectors? That's good to hear. 

 

In that case I'm going to try and source a spare set of connectors from a breakers and make a short adapter loom. 

 

Good work fella 👍

 

 

@uniteunion I mean to say, do both side mirrors work, function correctly?

 

1 hour ago, mrhappy said:

@uniteunion I mean to say, do both side mirrors work, function correctly?

 

Yes, they both have the same wiring. And buying 2 new connectors is a good call, that way you’ll he able to sell the facelifted big mirrors. Anyway, you’ll also see that pre-facelift cable is way shorter, so you might add some wire as an extension (the mirrors are connected to the door control module in the center of the door panel, so you might need extra 50cm aprox to reach it)

 

I’ll post the diagram as soon as I can, sorry! My one year old kid doesnt let me surfing on forums as long as I wanted😂

50 minutes ago, uniteunion said:

Yes, they both have the same wiring. And buying 2 new connectors is a good call, that way you’ll he able to sell the facelifted big mirrors. Anyway, you’ll also see that pre-facelift cable is way shorter, so you might add some wire as an extension (the mirrors are connected to the door control module in the center of the door panel, so you might need extra 50cm aprox to reach it)

 

I’ll post the diagram as soon as I can, sorry! My one year old kid doesnt let me surfing on forums as long as I wanted😂

 

Oh! I think this might scupper my plans.

 

I've got a pre-facelift and trying to fit facelift mirrors - so the opposite to what you're doing.  I hadn't understood that the cables were longer because the facelift mirrors connect directly to the door module. 🙈

 

I was hoping to get hold of the socket (door side) from a facelift and another pre-facelift plug to make an adapter.  See photos attached.

 

I think my only option now is to cut both and join the pre-facelift plug to the facelift mirror.  Which means I'll only be able to sell my pre-facelift mirrors to someone wanting to 'downgrade' 😟

 

 

Surely the existing pre-fl mirror connector has a part number on it so you can buy replacements rather than cutting it off?

 

If you can also post the fl mirror connector, it might be possible to find a socket for that too

 

edit:

At a guess, the pre-fl version might be 3B0972726? Certainly looks similar to this: https://www.ebay.co.uk/itm/172197189199 although a dealer might be cheaper.

 

This might be the FL version? https://www.aliexpress.com/item/4000181161162.html

Edited 20 June, 20205 yr by langers2k

25 minutes ago, langers2k said:

Surely the existing pre-fl mirror connector has a part number on it so you can buy replacements rather than cutting it off?

 

If you can also post the fl mirror connector, it might be possible to find a socket for that too

 

edit:

At a guess, the pre-fl version might be 3B0972726? Certainly looks similar to this: https://www.ebay.co.uk/itm/172197189199 although a dealer might be cheaper.

 

Hi @langers2k

 

I can confirm the pFL plug part number is 3B0972726.  Socket is 3B0972736.

 

The part number of the facelift plug is 1K0972926 I think. Following the pattern, there might be a socket ending 36?

 

I would need wires with terminals for both types. Wouldn't know where to buy these. 

 

Here's a photo...

 

Edited 20 June, 20205 yr by mrhappy

31 minutes ago, mrhappy said:

 

Hi @langers2k

 

I can confirm the pFL plug part number is 3B0972726.  Socket is 3B0972736.

 

The part number of the facelift plug is 1K0972926 I think. Following the pattern, there might be a socket ending 36?

 

I would need wires with terminals for both types. Wouldn't know where to buy these. 

 

Here's a photo...

 

Well, this made a funny turn haha!

 

as far as the facelift connector, the part nº is 1K0972928A. What I did is soldering the cables (In your case, facelift mirror to “old” connector). The result is that now I have two mirrors (facelift) without connectors and will order a couple so I can sell them properly.

 

Anyway, I had some gap to draw a quick diagram/pin numbering so you could use it. I hope it does make any sense to you. If it doesnt, it definitely helps removing the glass and seeing where al the cables start from inside the mirror. Good luck!

@uniteunion indeed it did.  I think I will cut and solder the wires like you did afterall.  Far less hassle, especially now you've done such a nice diagram, thank you!

 

There are two motor +ve and only one -ve.  Is there one +ve for up/down and one +ve for side-to-side movement?  Please can you confirm the pairing between pre-facelift and facelift, e.g. red to green and white to purple.

 

 

can't you just plug the mirror plug into the door controller?

1 hour ago, Eddie-NL said:

can't you just plug the mirror plug into the door controller?

 

Urm.... because that would just be far too sensible and easy! 🤦‍♂️

 

You mean here, like this?

 

Boy am I glad you turned up here today @Eddie-NL, I was just about to cut the wires!! 😆

yes, just plug it in

 

the worst case is that you might need to move some pins round, not sure if there is a difference between the pin location on the mirror between pre facelift and facelift

 

I can confirm that this no difference between pFL and FL mirror wiring and it really was a case of plug and play directly into the door modules.  I can't believe I didn't spot this!  Thanks for all your help chaps.

 

@uniteunion, it turns out it took another funny turn, and my swap didn't involve any cutting and splicing.  For future reference and for the benefit of others, I reckon you could separate the mirror loom from the main door loom of a pre-facelift, so that you didn't have to do any surgery.

 

There's one small nuance, which I thin existed with my previous mirrors, and that is that when I adjust the driver mirror, the passenger mirror adjusts too, but I can adjust the passenger mirror on its own.  Is this normal behaviour, or is there a fault somewhere?  I would suspect the switch is faulty. 

9 hours ago, mrhappy said:

I can confirm that this no difference between pFL and FL mirror wiring and it really was a case of plug and play directly into the door modules.  I can't believe I didn't spot this!  Thanks for all your help chaps.

 

@uniteunion, it turns out it took another funny turn, and my swap didn't involve any cutting and splicing.  For future reference and for the benefit of others, I reckon you could separate the mirror loom from the main door loom of a pre-facelift, so that you didn't have to do any surgery.

 

There's one small nuance, which I thin existed with my previous mirrors, and that is that when I adjust the driver mirror, the passenger mirror adjusts too, but I can adjust the passenger mirror on its own.  Is this normal behaviour, or is there a fault somewhere?  I would suspect the switch is faulty. 

Yep, makes sense to be just removing the harness in your case. That was funny, sorry if I Twisted your brain up. The thing is that in my case, that wasnt possible as the loom is one piece in facelifted models, from the Mirror itself to the door module. Pre-facelift models (your car) have the loom in two pieces (my old golf IV was the same), a long harness from the module to the A pilar area, and there a second connector so mirror cables are shorter and for not to disassemble the whole loom across the door. 
And yes, turned out that the pins are identical, but it freaked me out that one mirror had 6 cables and the other 7. My Insecure  skills in electricity made the swap turn a bit fuzzy haha!

 

p.s: my mirrors move independently, I think! Will check it anyway

12 hours ago, mrhappy said:

There's one small nuance, which I thin existed with my previous mirrors, and that is that when I adjust the driver mirror, the passenger mirror adjusts too, but I can adjust the passenger mirror on its own.  Is this normal behaviour, or is there a fault somewhere?  I would suspect the switch is faulty. 

 

Normal on a FL, it can be changed via the maxidot and possibly via VCDS.

 

My car is a pre-facelift, with FL Maxidot instrument cluster.  These car settings aren't available in the menu on the Maxidot, I think because it has CECM, not BCM.  I guess it's enabled on the car though and I would need VCDS to disable it.

I definitely have an option for that in maxidot. I think it's under "mirror adjustment" and the options are "individual" or "both".