BMW E46 Pumpkin 6.0 external amplifier problem

[premiere102]

First of all my ebay order number 182592929914 and my ebay name: cvio

I have a probelm with my Pumkin 6.0 Radio.
I have bought a externel amplifier from Audio System 80.4X.
The amplifier ist getting on and works fine.
But the problem is that his not going off.
It alwals stays on until the battery is empty. And my car ist not getting started.
I have to set the amplifier always manually to off. And turn it manually on.
how can i change this? Which settings on the radio must be to made?

Thanks

[Jammy]

Hi,
there is wire labelled "AMP" or "ANT" from the ISO cable,you need to connect it to the control pole of your external amplifier so that when you turn off the car stereo,the amplifier also be turn off .

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Regards