Thread: Retrofitting OE compass mirror.

Originally Posted by Slunnie

To remove the OE basic mirror, give it a sharp (not crazy!) hit in a downward motion a direction so it would slide down the windscreen.

This should pop it off the windscreen.

The wiring loom is in the headlining - you might be lucky to be able to loosen the headlining in the front area to be able to untie the wiring and pull it through.

more than likely you will have to drop the headlining.

Remove the map pockets and light which are over head - unclip wiring to lights and earth lead etc.
Remove the sun visors and clip
Remove A piller trim
Remove the front roof mounted handles

See if you can drop the headlining enough to get to the wires. You probably should be able to without going further.

Bring the wires down.

Clip in the Compass mirror onto the windscreen mount. Don't force it, it sits seemingly a fraction lower.

Plug in the mirror and test with ignition on.

Reinstall roof lining

Drive in circles to calibrate the compass.

This is another job I also started, but couldn't locate the wiring in the time I had available.

Do you know if they all have the wiring?

Originally Posted by shack

This is another job I also started, but couldn't locate the wiring in the time I had available.

Do you know if they all have the wiring?

Good question! I'm not sure, I'm assuming so, but I really don't know that is the case though.

For mine, the wiring was all tied up in a bundle. There are a few cavities up there which it might also be sitting in also.

I thought they all ran the same general body looms, so compass mirror, volumetric alarm, heated and power seats, heated windscreen etc is all wired in

Mine doesn't have the volumetric alarm (luckly for the dog), but I could see the wiring up there too.

They all have it, mine was really easy - the connectors were sitting right behind the light so the install was 5 min

Have to admit, I'm not sure why you want it. Mine has it, and it's about as accurate as a bent sundial. The auto dimming bit is cool though. Wish the outside ones did that.

Originally Posted by Tins

Have to admit, I'm not sure why you want it. Mine has it, and it's about as accurate as a bent sundial. The auto dimming bit is cool though. Wish the outside ones did that.

I think you've answered your own ponderance.

It's also possible the mirror supports other features than just the compass...

Originally Posted by shack;[URL="tel:3209647"

3209647[/URL]]I think you've answered your own ponderance.

It's also possible the mirror supports other features than just the compass...

Yes and no. The inaccuracy of the compass is annoying but not a reason for me to change the mirror, but it would be a reason for me not to bother if the car didn’t have it.

As a former truck driver I never use the interior mirror in any case.

I appreciate that my wants don’t mirror those of others.

What I would like to add to my car is the SLS remote.

My car has it. It is as accurate as a compass with four cardinal and four ordinal points can be. It can be calibrated with Nanocom.
The mirror compass is really just gimicy bling. For real navigation I have a Silva compass in the glove box.

The compass is not too bad given the limited number of directions in it. Its surprising how often you think you're travelling in a certain direction, but are actually going in a different direction. Its vaguely correct compared to the GPS.

The photochromatic mirror I am really looking forward to, My Audi has it on all rearview mirrors and it is such a great feature.

Anyway, its nice to have the options on the Disco, and it was only $100 or so to replace an aged mirror.