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Lupo GTI stereo no power?


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Having an issue with the stereo not powering on at all.

Tried 2 different stereos, neither work in the GTI but both do in the polo 6n2. Safe to say the stereos are good.

Here is a pic of the stereo wires. (unsure what the purple and black wires are, but have no voltage at any stage)

5af9b80082572_picofwires.thumb.jpg.49f2dfcf6dff34962aeba217a361bde1.jpg

I have recorded the voltage of the black plug as I think the brown plug is just for the speakers?

I have checked fuses 20 and 46 and and seem good.

These voltages are as if you are looking at the black plug straight on.

5af9b82adf17e_Ignitionoff.JPG.27aa16f60b3b63ef6475e758781e9ad7.JPG

5af9b82ec3534_Ignitionon.JPG.011ed479d48f04f6f807deadb046d2a0.JPG

Any thoughts? 

 

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Measured both.

Generic pic found online.

5af9c6f666808_Wirechart.JPG.4d3a52bf17ce318b46c80045dd67cb3e.JPG

Letter L (brown/red) = Lupo has no volts throughout. Polo has 0V at ignition off and 12V at ignition on.

Letter I = Lupo has 7V at ignition off and 10V ignition on. Polo has 0V at off and 10V ignition on.

Letter J = Polo has no wire. Lupo has green/grey wire

So I'm assuming the problem lies with the letter L being there is no ignition voltage. What can cause this?

 

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