Auto Dimming Rear View Mirror

Or just buy one of my A2 auto dimming rear view mirror kits
You have no messing and it just fits with a nice head lining to mirror stem trim panel
Wiring loom and new mirror all for £100
I have black and grey available atm

Regards. Paul


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You need the B6 version from the audi A4 with the sensor below the fixing boss,this one fits the A2's original window screen fitting.The pictures posted above are the correct one to purchase,tried and tested by myself and works perfectly

Thanks
Pete
 
I'm aware of that, Paul .... Thanks! I just don't like things to be TOO easy! and I am being honest, here! I'm moving forward on the LED array conversion for the rear-light clusters. The boards that will carry the LED's will even be curved to follow the profile of the front of the light clusters. I had proposed to use scrap number plates, so I'll see if they can be made to curve with the careful use of a head-gun. The LED arrays will be sourced from RS and each function will have 5 X 6 LED components in a row. I've just been weighing it up on the Internet.

David
 
You need the B6 version from the audi A4 with the sensor below the fixing boss,this one fits the A2's original window screen fitting.The pictures posted above are the correct one to purchase,tried and tested by myself and works perfectly

Thanks
Pete
Pete, I was keen to know this earlier in the day and through this Forum. I'm impulsive by nature and ordered it anyway.That was because it WAS from an A4 ( Blast!)), but as is my way, I'm then hard at work to put things right! ..... and BOY, does that give me a good feeling if I DO succeed! And as I've mentioned, I do think that I'll get this to fit. I'll remove the mounting plate that's secured with two screws internally in the front of the stem. Then I'll replace it with the plate from the standard A2 mirror. I'll have to tap two holes to accept the screws needed to hold it in place. There may be the need for some slight removal of material and maybe some alignment/packing. I'm confident, here, and I haven't even got the A4 mirror, yet!
Let's see where I get from here ..... As I've intimated, it can always be returned.

David
 
Pete, I was keen to know this earlier in the day and through this Forum. I'm impulsive by nature and ordered it anyway.That was because it WAS from an A4 ( Blast!)), but as is my way, I'm then hard at work to put things right! ..... and BOY, does that give me a good feeling if I DO succeed! And as I've mentioned, I do think that I'll get this to fit. I'll remove the mounting plate that's secured with two screws internally in the front of the stem. Then I'll replace it with the plate from the standard A2 mirror. I'll have to tap two holes to accept the screws needed to hold it in place. There may be the need for some slight removal of material and maybe some alignment/packing. I'm confident, here, and I haven't even got the A4 mirror, yet!
Let's see where I get from here ..... As I've intimated, it can always be returned.

David
Hi David

I like your style buddy........Just like me, like a challenge.You will get this done just be very careful with taking the boss off the A2 screen.I love it when people say "arrrh that carn't be done",makes me more determined to get the job done and prove them wrong.Good luck,if you need anything just let me know, i have alot of a2 parts

Thanks
Pete
 
just be very careful with taking the boss off the A2 screen. I have a lot of a2 parts
Thanks for your kind interest! No, the boss stays on the screen! It's the locating plate (inside the stem at the windscreen end) and which mates with that boss that I'll need to remove from my mirror and relocate inside the replacement A4/B7 auto-dipping mirror's stem. I can't wait for it to be delivered so that I can see if it's do-able!
So you have a lot of A2 parts, eh? Well, I'm a member of THAT club, too! :) I THINK that I may be able to "weigh-in" a little more than most regarding THAT topic!

David
 
Yes, that's the one! A SLIGHT difference in cost, though? and, I DO like a challenge!

David

Yeah they are asking a lot of money. Probably much cheaper ones out there but found those 2 from a very quick search on ebay and were the first 2 I found.
 
A4 b6 mirror is simple to do, use an original A2 stem (remove from mirror), ream out (dremmal etc) the centre of the ball on the A4 dimming (remove wiring loom from stem first) mirror stem so that the A2 stem will slip in, (reduce the A2 ball dia a little with a file or flap wheel and make a slot for the wires similar to the A4) glue or epoxy resin A2 stem in, cut the ball off of the A4 stem clean edges, allow to set, push A2 with A4 ball back into the A4 dipping mirror. Hard bit done.............now just a case of wiring
 
The way I see it, there's no need to do anything with the stem. An Audi A4, B6 type, will even fit directly to the boss on the A2 windscreen. Looking at some auto-dimming mirrors on Ebay shows that to be the case. There appears to be two types of boss glued to Audi's and hence there can be two types of mirror. The Audi A2 boss and the Audi A4/version B6 use a smaller clamping/locating plate which has a pair of vertical claws that align with the boss. Turning the mirror clockwise then locks it in place on the boss. Now, on to the other type .... its plate is a larger diameter and has three claws. Obviously the windscreen boss would be different, too. Both of those clamping plates are removable. The Audi A2 is held in place with a central rivet that has to be drilled-out to remove the plate. The other, larger version is secured with two screws, so removal is very easy. Now because the other type of auto-dimming mirror has a larger diameter plate, the A2 plate will easily fit in its place. The modified mirror will then locate directly to the A2's window boss. That simple metal plate is all that differentiates a wide range of these Audi mirrors. There is absolutely no need to do any other modifications .... no drilling, Dremmeling, etc. Just changing the plate should give a usable mirror.
Furthermore, there is then a much wider choice of prospective mirrors from which to choose. There ARE a few that are unsuitable, though. A careful look at them should reveal their suitability ..... I have seen some as cheap as £20-£30 !
I will give more detail and photos as I progress with this latest project.

David
 
The way I see it, there's no need to do anything with the stem. An Audi A4, B6 type, will even fit directly to the boss on the A2 windscreen. Looking at some auto-dimming mirrors on Ebay shows that to be the case. There appears to be two types of boss glued to Audi's and hence there can be two types of mirror. The Audi A2 boss and the Audi A4/version B6 use a smaller clamping/locating plate which has a pair of vertical claws that align with the boss. Turning the mirror clockwise then locks it in place on the boss. Now, on to the other type .... its plate is a larger diameter and has three claws. Obviously the windscreen boss would be different, too. Both of those clamping plates are removable. The Audi A2 is held in place with a central rivet that has to be drilled-out to remove the plate. The other, larger version is secured with two screws, so removal is very easy. Now because the other type of auto-dimming mirror has a larger diameter plate, the A2 plate will easily fit in its place. The modified mirror will then locate directly to the A2's window boss. That simple metal plate is all that differentiates a wide range of these Audi mirrors. There is absolutely no need to do any other modifications .... no drilling, Dremmeling, etc. Just changing the plate should give a usable mirror.
Furthermore, there is then a much wider choice of prospective mirrors from which to choose. There ARE a few that are unsuitable, though. A careful look at them should reveal their suitability ..... I have seen some as cheap as £20-£30 !
I will give more detail and photos as I progress with this latest project.

David
My A2 has a smaller mirror fixing...............perhaps a replacement screen (non O/E) may be fitted with different mirror fixing, but it means I cant simply fit a b6 mirror............... I did look to see if it was possible to change the stem fixing from one to the other but its a no go.
 
. I did look to see if it was possible to change the stem fixing from one to the other but its a no go.
I think that there may be some variation even with the Audi A4 B6 type of mirror, but I doubt it. Photos of these type of mirrors on Ebay certainly do confirm that they have an identical means of clampimg onto the A2 boss.
I doubt that you had a unique boss on your screen? I've tried to explain in the very simplest way how it should be possible to adapt a range of mirrors to fit the standard Audi A2 boss. It is not clear to me as to how you've reached the conclusion that it''s a "No-no"? However, it may be that I too come to the same finding!. At present, I have a high degree of confidence that I will be able to achieve my goal and if so, I'll be able to advise other members as to this end.

David
 
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I think that there may be some variation even with the Audi A4 B6 type of mirror, but I doubt it. Photos of these type of mirrors on Ebay certainly do confirm that they have an identical means of clampimg onto the A2 boss.
I doubt that you had a unique boss on your screen? I've tried to explain in the very simplest way how it should be possible to adapt a range of mirrors to fit the standard Audi A2 boss. It is not clear to me as to how you've reached the conclusion that it''s a "No-no"? However, it may be that I too come to the same finding!. At present, I have a high degree of confidence that I will be able to achieve my goal and if so, I'll be able to advise other members as to this end.

David
Yes a simple way to fit the dimming mirror would be of benefit to quite a few members who want to do this.......I've found one way that's suited me and as the mirror only cost me £5 I was prepared to do a bit of work but its turned out simpler than I thought..
 
Yes a simple way to fit the dimming mirror would be of benefit to quite a few members who want to do this.......I've found one way that's suited me and as the mirror only cost me £5 I was prepared to do a bit of work but its turned out simpler than I thought..
That was a bargain! .... £5! You haven't elaborated on your statement that it was a "no-no"? Why should that have been? It did read that your method was somewhat involved ..... ream-out cut a slot, epoxy resin, cut the ball off ... I would say that just changing the internal plate and therefore retaining the complete new mirror WOULD be easier?

David
 
Most Audi auto dimming mirrors have an extra plastic "duct"/channel that neatly conceals the wiring as it travels up to the roof/headlining. However, modifying one of these mirrors by adapting the A2 mirror's standard stem loses this feature. A2OC member "deproman" made a cover to hide the wiring, but if my method is successful, then it's neater and easier to use the replacement mirror "as-is"

David
 
I had a look at the B6 fitting and agree that the fixing may well be interchangeable with the A2 one as you say the B6 plate is held on by 2 screws and the A2 riveted on (I've got a spare known good fixing one) I may well try to do the change and see if it fits on a car in the local scrap yard. A good friend who's a windscreen fitter looked at my car and confirmed a replacement screen had been fitted, he said that he's fitted screens in the past with the wrong mirror fitting so not unheard of........
 
A normal Audi A4/B6 type of auto-dimming mirror SHOULD just fit directly onto the A2 boss ... it's all in this very thread and there are photo's too.
My Audi A4 mirror was a B7 type and didn't fit directly. I'm well into adapting it (it arrived today). It IS pretty difficult, but I now know that I'll succeed. I've cut the complete last centimeter off the standard A2 mirror and secured it with a centre bolt inside the end of the replacement mirror. That's because it has a MUCH larger diameter. I think that this might have been able to be done by just changing the plate, but this is more elegant. I'll finish this tomorrow (electrics still to do, though.). There's one other interesting observation with this new mirror : there is a small opening on the FRONT face of the mirror ... is this for rain-detection? I'm thinking that I could make use of that feature. too? There was a harness listed on Ebay pertaining to that part of the Audi's operation.

David
 
Small opening?

The rain/headlight sensor is a seperate unit like this https://www.ebay.co.uk/itm/New-OEM-...237211&hash=item1a41edc71a:g:7R4AAOSwnlFaac0j

This unit is clipped onto the bracket attached to the windscreen and then the rear view mirror is designed to twist onto the bracket a quarter turn and and will locate over the sensor.

The bracket will look like the one on this listing with circular window inside https://www.ebay.co.uk/itm/AUDI-A4-...242941?hash=item1a40cbb9fd:g:mOIAAOSwM91aXHRN

Some earlier Porsches and VWs have been retrofitted with rain sensors so could be possible but asfaik the A2 did not even come with this option
 
Also the rain sensor will need to be wired in too and usually need stalk control to activate and auto headlight switch. Sorry for using so many ebay links. It's just easier to find parts and usually have decent photos etc
 
There are 6 wires in total
Earth
Ignore live
Interior light
Reversing light
Left hand door mirror dim
Right hand door mirror dim

But you only need the first two to make it work

I have the first 4 wires in but that is just me
The 18m ball is needed due to the extra weight of the auto dimming mirror so do not try to use the A2’s small ball as it’s not up to the job with the extra weight and less contact area due to wiring loom
Paul


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Hi Paul,
The mirror's fitted. Very happy with it. So just the wiring. Of the six wires coming from the mirror, what is the colour of the live feed wire, please? The earth will be brown, I assume? I then take a feed from the interior light which is very easy to access. Is that correct? Thanks, Paul

David
 
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