Any electricians in the house

[sapphireblack]

I need to identify a positive and negative from this diagram

[X5Sport]

What is the panel pinout for? I’m assuming that it’s some form of car hardware?

The negatives are easy as they use the common ‘Earth’ symbol (upside down T with two lines under). Main power ground is next to the pin marked ‘Safe’.

The power feed points appear to be two of marked +UB, with one being switched. They are the only ones that I can see that fit. The connection ‘stack’ appears to be In two connectors.

Telephone | Nav at the top of the square connector
Main power Canbus, Alarm | Speakers in lower part of the square connector.

Video at the bottom in its own connector.

For safety you should look up the manufacturers installation manual. There are other positive feeds for the clock, memory backup and other functions. How those are fed via on board circuits I have no idea. They’ll be in the loom somewhere.

[sapphireblack]

Thank you. The schematic is on the HU of the VW Touareg i bought. I'm adding a connects2 bluetooth adaptor which is plug and play but needs a power and earth connection.

[X5Sport]

Try this.....amended

https://pinoutguide.com/Car-Stereo-Volk ... nout.shtml

[sapphireblack]

You're a star, thank you,.

So i'm clear for myself, earth is straightforward then. VW have wired early Touaregs such that the radio works simply by inserting the ignition key. I don't know if that constitutes a switched live or not. Should I opt for live 1 or 2 in your opinion.

[X5Sport]

Constant 12V will keep the Bluetooth on all the time (and could kill your battery) whereas the switched live will only apply power when the key is in. To me ‘switched’ still means you need a key. No key, no power

[sapphireblack]

#2 it is then.

I'm very grateful, thank you.

I'm spending time, because it's free and lockdown ensures boredom, to do work i would have been doing elsewhere, had I been able to drive there.

Optimistically if i can get the car abroad later in the year, at least i'll have a more pleasurable trip across europe with enhancements done here rather than there. If we're all still isolated for the remainder of 2020 I'm not sure what may evolve, for any of us

[X5Sport]

Me neither, I’m playing Primary School Teacher when the schools aren’t in, and may go and buy a car polisher kit and have a go at the X6 and 3er to get 10 years + of dirt and wax off them. Never done it before so being a tad cautious before buying. I’m told the Meguiars kit is good.

[sapphireblack]

I had the X6 machine polished/valeted over several days when i first bought it. Two years on. washed and dried lovingly, and usually garaged its holding up very well. I hardly use it
Its currently sorned and mothballed as i was due to be leaving the UK at the end of April.

[sapphireblack]

Oh well the Connects2 Bluetooth dongle didn't work at all, reason unknown. Thinking I may upgrade the CD map HU to the DVD type but the quadlock has differences.

Anyone care to offer an opinion on whether these are a straight swap? A VW specialist in Germany says they are but it looks to me to not be?

My HU schematic as above, donor DVD HU here. Considering #2 I highlighted initially, the switched live on mine isnt even physically present, I'm not sure how reliable this could ever be

[X5Sport]

EA pins are in different places looking at the two pics (top left and top right connectors, pins at right of each connector). It will depend upon what is physically loomed and wired in the car. BMW used to do a one-size fits all loom standard, though no longer. I don’t know what VAGs approach to wiring looms was. No idea what those pins do, but they look to be the only difference.

Still a difference. If an expert says it should work then he/she may be right. May only be one way to find out.

[sapphireblack]

Indeed trial and possibly error. £150 for a pre-owned unit , which I'd doubtless lose money on if resold.
How much convenience is it worth?