DIY: HomeLink + auto dimming rear view mirror retrofit.

**M3C** · 05-29-2009, 01:04 AM

I will have to modify the sunroof motor cover in order to fit it in there or find the part number of that E36 bulky trim panel that mounts in there.

Does the reverse wire provide ground (-) or power (+)?

**themadrussian** · 05-29-2009, 01:24 AM

Originally Posted by M3C

I will have to modify the sunroof motor cover in order to fit it in there or find the part number of that E36 bulky trim panel that mounts in there.

Does the reverse wire provide ground (-) or power (+)?

Not sure what the reverse wire does, but it kills the autodimming function, not sure quite how, electrically.

I doubt you'll find the PN for the trim panel - I've never seen it in the parts system.

The UGDO is massive and deep - there is very little place to mount it up there.

**jasonf860** · 05-29-2009, 06:17 AM

From what I've read online, the reverse wire should be a 12v positive.

**RRSperry** · 05-29-2009, 08:26 AM

Yep the reverse signal is just a switched 12v+ . When the trans goes into reverse, it closes the reverse switch, and the backup lights come on. Nothing fancy.

So you could tap the normally open side of the reverse switch or anywhere on the wires the go to the reverse lights, or you could install a manual 12V switch to do the same thing.

**M3C** · 05-29-2009, 03:08 PM

Originally Posted by themadrussian

Not sure what the reverse wire does, but it kills the autodimming function, not sure quite how, electrically.

I doubt you'll find the PN for the trim panel - I've never seen it in the parts system.

The UGDO is massive and deep - there is very little place to mount it up there.

Wish I had the panel you just sold recently.
I will try to communicate with a parts salesman and see if he can find the p/n for the trim panel or will do it somehow myself with plastic panels and bonding epoxy. Not sure how stretchy that fabric is, fabric that covers the sunroof motor cover, if it stretches I can try and make extra space under so the remote will fit.

It is funny I have located the reverse wire years ago when mounting BMW Traffic Pro, it is located under the driver's side footrest area, think it was blue with yellow stripe. Since then did not remember was it 12V or ground and have tested the autodim mirror reverse requires 12V, thanks for confirming this.

How difficult is to remove the mirror and a pillar cover?

**themadrussian** · 05-29-2009, 03:11 PM

Originally Posted by M3C

Wish I had the panel you just sold recently.
I will try to communicate with a parts salesman and see if he can find the p/n for the trim panel or will do it somehow myself with plastic panels and bonding epoxy. Not sure how stretchy that fabric is, fabric that covers the sunroof motor cover, if it stretches I can try and make extra space under so the remote will fit.

It is funny I have located the reverse wire years ago when mounting BMW Traffic Pro, it is located under the driver's side footrest area, think it was blue with yellow stripe. Since then did not remember was it 12V or ground and have tested the autodim mirror reverse requires 12V, thanks for confirming this.

How difficult is to remove the mirror and a pillar cover?

Yeah, the wire on the retrofit harness for reverse-cancel is indeed blue/yellow. Should be nice and simple, then.

**RRSperry** · 05-29-2009, 03:17 PM

Rtfm. It's +12V

**Seans M3** · 11-02-2009, 11:36 PM

(11/2/09 at 8:36pm) Anybody know what pin 1 thur 10 on the mirror side is? I just got my retro harness. Mine has 4 wires plus a gnd.

(11/3/09 at 1:07am) Never mind. I found my answer. Here are the pin outs that worked for me.

Pin
1 + Reverse
2 Not used
3 + Switched
4 Not used
5 Not used
6 Not used
7 Not used
8 + from alarm LED
9 - from alarm LED
10 - Ground

**themadrussian** · 11-06-2009, 02:06 AM

Originally Posted by Seans M3

(11/2/09 at 8:36pm) Anybody know what pin 1 thur 10 on the mirror side is? I just got my retro harness. Mine has 4 wires plus a gnd.

(11/3/09 at 1:07am) Never mind. I found my answer. Here are the pin outs that worked for me.

Pin
1 + Reverse
2 Not used
3 + Switched
4 Not used
5 Not used
6 Not used
7 Not used
8 + from alarm LED
9 - from alarm LED
10 - Ground

Good to know! What was the PN you used to order your retrofit harness (since you ordered one for a car with alarm, yes)?

**Seans M3** · 11-06-2009, 02:39 AM

Originally Posted by themadrussian

Good to know! What was the PN you used to order your retrofit harness (since you ordered one for a car with alarm, yes)?

Its off of a E9x

61120434330 $28 from Cmuzyy

It came with the wires not plugged into the harness plug

**Kerwin81** · 11-06-2009, 09:43 PM

hey seans m3. Im doing this mod this weekend. I was in the middle of trying to figure out the wiring as well. Whats the part number of the mirror you are using?

**themadrussian** · 11-07-2009, 01:13 AM

Originally Posted by Seans M3

Its off of a E9x

61120434330 $28 from Cmuzyy

It came with the wires not plugged into the harness plug

Interesting - my harness was "pre-made" for me. Oh well.

**Seans M3** · 11-07-2009, 01:38 PM

Originally Posted by Kerwin81

hey seans m3. Im doing this mod this weekend. I was in the middle of trying to figure out the wiring as well. Whats the part number of the mirror you are using?

Let me get back to you as its already in. Give me a few hrs.

Here is the p/n of the mirror that I got: 51169159090 off of a '05 E60

**Cataldo** · 11-09-2009, 05:43 PM

Hey,
I just ordered a brand new one of these mirrors. I've just had a look at my roof though and because I don't have a sunroof there's no 'easy access' panel up there...Does that mean I have to take off the whole roof? Please say no.

**Kerwin81** · 11-09-2009, 07:23 PM

thanks seans m3.

Cataldo all you have to do is unscrew the front visors and their anchors and the head liner will hang in the front.

**RRSperry** · 11-09-2009, 08:06 PM

Or just take out the map lights...

**Seans M3** · 11-10-2009, 12:06 AM

Originally Posted by Kerwin81

thanks seans m3.

Cataldo all you have to do is unscrew the front visors and their anchors and the head liner will hang in the front.

Thats what I did since I ran my wires down the pass a piller. Its been quite a lil tear down on my part. I pulled my glove box to replace my cabin filter & have since installed an OEM OBDII alarm w/parking light flash mod, front speakers, rear view mirror with home-link, & am in the middle of installing the wiring for the headlight aiming.

**Cataldo** · 11-11-2009, 03:42 AM

Ok so I got my mirror. Forgot to order the one with the homelink

I tried just plugging the thing in and the compass seemed to work, didn't check the autodim but my keyless entry didn't work. I figure I gotta do some mucking around. Crapped myself when I locked the car with my key then the car wouldn't open again for some reason. Luckily when you open the boot it opens all doors.

Mind having a look at this pdf...May have ordered the wrong one? It says

These installation instructions are only valid for cars without SA 875 (infrared remote control).

http://bigpatsfans.com/mirror/pics/01_29_0_028_299.pdf
My P/N for the mirror is 51 16 0 028 301

bahhhh.

btw, reason why I didn't get the part number specified here was because I'm an aussie and apparently we got a different frequency here. Gaahhhh!

**Fluff** · 11-14-2009, 06:08 PM

Hi All

I'm having problems purchasing a Homelink mirror from the US. Can anyone help me ??

Regards

Fluff

**themadrussian** · 11-15-2009, 03:26 AM

Originally Posted by Fluff

Hi All

I'm having problems purchasing a Homelink mirror from the US. Can anyone help me ??

Regards

Fluff

I would check US eBay - I doubt you'll find them for cheap anywhere else.

**Kerwin81** · 11-15-2009, 08:59 PM

Hey themadrussian do you have the correct part number for the endcaps? I ordered the end caps you have posted 51167133655 and it came with a window for a rain sensor.

I did the mod last week; you have been a big help. thanks for posting.

**Cataldo** · 11-17-2009, 01:56 AM

Great....I've ordered the wrong one again.... This time 51169174309
Is the radio receiver for the keyless entry apart of the mirror or do I have to put my module from my old mirror in to it or something? Baaaahhhhh! Can't get the keyless entry going....Homelink works a treat though...

**Seans M3** · 11-17-2009, 03:35 PM

Originally Posted by Cataldo

Great....I've ordered the wrong one again.... This time 51169174309
Is the radio receiver for the keyless entry apart of the mirror or do I have to put my module from my old mirror in to it or something? Baaaahhhhh! Can't get the keyless entry going....Homelink works a treat though...

Thats hard to say cause the US Version (at least the E36) doesnt use the mirror for the alarm trasmitter. Thats in the brain of the alarm (black box) behind the glove box (again, US model. UK will be under steering)

**Cataldo** · 11-17-2009, 05:44 PM

Right,
I got a Euro spec in case you're wondering. Hmmm...So if it doesn't use the mirror, why would it stop working when I disconnect the mirror?

**Seans M3** · 11-18-2009, 12:53 AM

Originally Posted by Cataldo

Right,
I got a Euro spec in case you're wondering. Hmmm...So if it doesn't use the mirror, why would it stop working when I disconnect the mirror?

I figured since your in Australia. Not sure if the euros have a different set up. You'd have to contact the dealer to verify this.

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