Otherwise, both plug is very tight, to the blue wire to 12V +
Fortunately, a plug-in contact from the radio (XM XOMAX VRSU720BT) was free.
Here, however, the attached to the blue cable connector only fits into the ISO plug when the side a little bit squeezed with pliers. ISO should be and remain ISO and for this inaccurate working I would deduct a star. then it would be only 3 stars = "not bad". The adapter holds but and work - I like that and makes 4 stars
Note: Unfortunately, the glass antenna of the VW Bus T4 VW-foreign radio only works with this adapter that brings the necessary 12 Volts for the aerial amplifier. In one stumbles course only if you have installed everything and wondering how bad the reception has become.