Skezza Posted December 4, 2012 Report Share Posted December 4, 2012 (edited) Just lately, I've been getting a little ticked off with the brightness of my double din screen. Turning it down requires me to go into the settings and is a bit of a ballache.The back of the HU has a single wire labelled 'Illumi'.I've read that I can simply tap into the orange wire on the Wiring Harness and connect it, and this will work however I've also read on another VW forum that this causes the old magic smoke to appear and subsequent lack of illumination altogether.Does anyone know the easiest way to wire this in so I have illumination controls?CheersEdit:P.S. I'd prefer not to wire into the cig socket, if possible. Edited December 4, 2012 by Skezza Quote Link to comment Share on other sites More sharing options...
Pete91 Posted December 4, 2012 Report Share Posted December 4, 2012 Might be a daft question but have you gone through the settings on the headunit? Just cos on mine there is a setting to have auto dim so that the HU dims when the lights are switched on. Quote Link to comment Share on other sites More sharing options...
Skezza Posted December 4, 2012 Author Report Share Posted December 4, 2012 (edited) On Settings, there is three modes for brightness:AutoDayNightas you can expect, Day is very bright, Night is darker. Auto is supposed to do just that, dim the head unit when the headlights are on.I assume the reason why it's not doing that (Auto basically is Day at the moment, always very bright) is because that Illumi wire from the back of the HU isn't connected? Edited December 4, 2012 by Skezza Quote Link to comment Share on other sites More sharing options...
matt123roll Posted December 4, 2012 Report Share Posted December 4, 2012 On Settings, there is three modes for brightness:AutoDayNightas you can expect, Day is very bright, Night is darker. Auto is supposed to do just that, dim the head unit when the headlights are on.I assume the reason why it's not doing that (Auto basically is Day at the moment, always very bright) is because that Illumi wire from the back of the HU isn't connected?I would imagine the HU needs to know when it's dark outside? So it will either have a sensor in it much like a laptop/iphone when set to auto brightness or as you say it would need wiring into the loom so it knows when the lights are on. Contact the manufacturer if your unsure Quote Link to comment Share on other sites More sharing options...
fattasss Posted December 4, 2012 Report Share Posted December 4, 2012 Grey/green wire is illumination. Quote Link to comment Share on other sites More sharing options...
Tobs23 Posted December 4, 2012 Report Share Posted December 4, 2012 there is an illumination wire in the back of the heated rear windscreen switch, thats where i took the feed for my fogs Quote Link to comment Share on other sites More sharing options...
Skezza Posted December 6, 2012 Author Report Share Posted December 6, 2012 Hmm, see that seems a bit unnecessary, especially if the switch is available on the ISO block.I'm tempting to stick a multimeter on the of the orange wire and see what the crack is with that. If 12v is detected when headlights are on, and 0v when headlights are off, it's the correct wire.... hmmm, I think! Not totally convinced mind. Quote Link to comment Share on other sites More sharing options...
heartagram Posted December 8, 2012 Report Share Posted December 8, 2012 Wear sunglasses at night. Quote Link to comment Share on other sites More sharing options...
Skezza Posted December 10, 2012 Author Report Share Posted December 10, 2012 Wear sunglasses at night.useful Quote Link to comment Share on other sites More sharing options...
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