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D2 - Interior Electrics Airbags, Sensors, climate modules, instrument clusters, switches etc |
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Thread Tools | Display Modes |
#1
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Internal mirror wiring for dimming mirror
A while back now I bought an auto-dimming internal mirror but due to various reason I am yet to try and fit it!
I am hoping that I can splice into the mirror loom rather than using the wiring in the car, that way if I or someone else ever wanted to change back it will be simple. As I have a facelift car with the ambient lighting I was thinking tapping into that would make the most sense as it would then activate with the headlights, what I haven't been able to find is which wires this would be. Does anyone know which these would be? I came across the picture below from Goran when fitting his dashcam which shows the reading lights circuit. in this post http://forum.a8parts.co.uk/showthread.php?t=11184 This leaves the Green/Cream, Grey and Blue wires to check.
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Cars... '93 Audi Coupe 2.0 Alpine White (sold) '99 Audi S4 Merlin Purple - K04 upgrade to 412hp (sold) '00 Audi S8 Agate Grey (Sold ) '11 Audi Q7 4.2tdi Unknown Red (Classic Red Pearl Effect - thanks MJ) Last edited by pete-p; 8th July 2021 at 07:19 AM. Reason: Link to post |
#2
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Racking my brains a bit on this, I fitted one to my PF S8 which has rather less wiring up there!
The best place I found to wire in was the sunroof circuit, easy to identify from the switches on PF. That circuit (checked by testing with a multimeter and I'd guess FL is the same) is live with ignition on and goes off after a small delay when ignition is turned off. It obviously doesn't matter if it's "active" when the headlights are not.
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.). 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one! Finally: gone, but not forgotten..... 1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later) 1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850! |
#3
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This is the thread that I referred to when I fitted mine:
http://forum.a8parts.co.uk/showthread.php?t=1100
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2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts Sold! 2008 S8 D3 5.2 V10 - Engine: BSM, Gearbox:KLW, Colour:LY7F Suzuka Grey Pearl Effect, Interior:Black/Black with Silver/Black valcona leather with carbon atlas inserts, Bang & Olufsen, Heated windscreen, Soft-close doors, TV, DAB, AMI, Quad Zone, Auto Boot, Auto dim Mirrors, Keyless entry, PDC with rearview camera, AFS II Headlights My DIY jobs - Fan Jet Windscreen Washers, Retrofitted Electric Side Blinds |
#4
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Thanks for the replies. I think I've read almost all there is about the wiring there but was really hoping I could use the feed for the ambient lighting and connect it all in the one harness before fitting it in.
I may dig out my multimeter and see what the blue and grey wires do, perhaps that's where I need to look first. I saw mention of blue with red stripe being illumination so there could be a link there with the plain blue in the mirror harness... probably too simple though!
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Cars... '93 Audi Coupe 2.0 Alpine White (sold) '99 Audi S4 Merlin Purple - K04 upgrade to 412hp (sold) '00 Audi S8 Agate Grey (Sold ) '11 Audi Q7 4.2tdi Unknown Red (Classic Red Pearl Effect - thanks MJ) |
#5
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Didn't we have a thread on this recently where we decided it's possible to do it with four of the six wires on the mirror, just using things that are in there already? If I recall correctly, the only things which aren't there are the reverse signal (to disable the dimming) and the output to the door mirrors (which aren't there anyway).
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#6
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That might have been me in the sale thread
http://forum.a8parts.co.uk/showthread.php?t=15718 I'm sure it's possible, just need to identify which of the three remaining wires to use.
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Cars... '93 Audi Coupe 2.0 Alpine White (sold) '99 Audi S4 Merlin Purple - K04 upgrade to 412hp (sold) '00 Audi S8 Agate Grey (Sold ) '11 Audi Q7 4.2tdi Unknown Red (Classic Red Pearl Effect - thanks MJ) |
#7
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Just to confuse you even more. I knew I'd posted about this before but couldn't remember when and couldn't find it last night. Finally found it:
http://forum.a8parts.co.uk/showthread.php?t=12806
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2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts Sold! 2008 S8 D3 5.2 V10 - Engine: BSM, Gearbox:KLW, Colour:LY7F Suzuka Grey Pearl Effect, Interior:Black/Black with Silver/Black valcona leather with carbon atlas inserts, Bang & Olufsen, Heated windscreen, Soft-close doors, TV, DAB, AMI, Quad Zone, Auto Boot, Auto dim Mirrors, Keyless entry, PDC with rearview camera, AFS II Headlights My DIY jobs - Fan Jet Windscreen Washers, Retrofitted Electric Side Blinds |
#8
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Thanks Sean. I read your post there and it was very helpful as mine has the same coloured wires as yours.
One thing I see from that and which probably ties in with what Andrew noticed, there is a feed to the dimmer from the interior lights. I wonder if this is to cancel the dimming when the interior lights come on? Could be handy to connect this one up to make it easier when dropping someone off!
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Cars... '93 Audi Coupe 2.0 Alpine White (sold) '99 Audi S4 Merlin Purple - K04 upgrade to 412hp (sold) '00 Audi S8 Agate Grey (Sold ) '11 Audi Q7 4.2tdi Unknown Red (Classic Red Pearl Effect - thanks MJ) |
#9
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Quote:
Though personally I'd probably avoid using that input unless you're doing a full OEM install - you just never know how the various controllers interact so KISS. I also note from that thread Sean took power from the sunroof (as I did on my PF) and similarly just found a good earth point.
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.). 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one! Finally: gone, but not forgotten..... 1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later) 1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850! Last edited by HPsauce; 8th July 2021 at 10:22 AM. |
#10
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So I've been studying the wiring diagram for the interior lights and think I have the solution.
The usual plug on the mirror with/without dimming has the pins below: 1. Red - Always live even when ignition off. 2. Grey/Green - Switched live with headlights. Also same colour wire provides power to other lights (e.g. ashtray) 3. Green - Unsure. Some reversible ground from lights? Goran indicates this as being activated by driver's reading light switch but then connected it to the negative for the Dashcam. 4. Grey - Not sure but possibly related to headlights or perhaps the other reading light, only other grey I can see is between the headlight switch and the relay in the footwell. 5. Blue - Ground. Another blue on the tiptronic switch is connected to ground (brown) so seems logical this does too. So I found a 9v battery and connected the positive to pin 2 and negative to pin 5 and the red ambient lights switched on. I think this is where I need to connect pins 2 and 1 from the dimming circuit. Not sure if I can connect pin 3 from the mirror (linked to reading light switching) to pin 6 of the dimming (normally connected to interior front and reading lights) any thoughts?!
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Cars... '93 Audi Coupe 2.0 Alpine White (sold) '99 Audi S4 Merlin Purple - K04 upgrade to 412hp (sold) '00 Audi S8 Agate Grey (Sold ) '11 Audi Q7 4.2tdi Unknown Red (Classic Red Pearl Effect - thanks MJ) Last edited by pete-p; 9th July 2021 at 10:49 AM. |
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