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#1
17th March 2019, 05:39 AM
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Solar Sunroof ‘hack’.
Stumbled upon this YouTuber who’s redirected the feed from the solar sunroof to the car’s battery. He says it previously powered HVAC and battery. I thought it just powered HVAC TBH.
https://youtu.be/iOohKDb0m6I The fella seems to have gone about it the right way. How effective it is I’m not sure....
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2010 A8 SE Executive 4.2 FSI D4 2007 Mini Cooper S R56 2008 D3, gone, but not forgotten after 9 years and 90k. 
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#2
17th March 2019, 07:56 AM
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That's a long video, I got a bit bored and did not watch it all. From factory solar roof only drives fan, does not charge battery.
I did try to make it charge battery as well as drive fan on my PF D2 but the solar panel is not powerful/efficient enough. Newer cars have more powerful panels and if you diverted all of the power to battery it might work better. I wanted to keep cooling fan working as well. It was slowing down discharge of battery if I left car without driving for like a month but did not keep it fully charged so I still needed to connect it to mains charger if not using car for long period of time. This also slowed down fan and reduced cooling so in the end I reverted back to fan only. I was looking at changing sunroof with a one from FL car with 4 rows of solar cells instead of 3 but decided that it will probably not be enough anyway.
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure
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#3
17th March 2019, 09:59 AM
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Quote:
There was a 3-pin connector going to the HVAC unit, but he didn't show how he took the feed from the sunroof into the solar controller and back to the HVAC. Nor did he show where he connected the wires to the battery (although he did mention the battery management unit). I've yet to fit my solar sunroof, but it would be a nice addition if it worked (and cost less than a tenner on eBay), and could also fit a switch to the HVAC feed so it could be turned off during the winter months (just like HPsauce has done on his S8).
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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 HeadlightsMy DIY jobs - Fan Jet Windscreen Washers, Retrofitted Electric Side Blinds Last edited by steamship; 17th March 2019 at 09:59 AM. Reason: eBay reference
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#4
17th March 2019, 10:03 AM
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A D2 is relatively simple in comparison to a D3; I expect you could do something similar there relatively easily as there's no battery management unit to contend with.
In fact I vaguely recall someone has, maybe integrated with a CTEK charger connection?
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions and extended leather. Ski hatch retrofit. Aftermarket reversing camera. DVB-T and XCarlink now removed as redundant. 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".  (Even rarer than a D2 S8!) 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. Agate Grey/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. Added Auto-dim mirror, Leather seats, 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! 
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