By no means something for laymen !! Function after modification

Last Friday I ordered this set. The price, of course, spoke mainly for the product.
The bezel including the depositors are processed quite good for the price and fit in my golf. 5
Small downer, color adjusts the aperture not really 100 percent for interior around it. But this is quite not care so connect gewesen.Nun the quadlock and the antenna me because of the price. Unfortunately then came the a-ha experience.
Ignition and continuous positive on prefabricated Iso plugs were reversed, this expressed itself so that for example the set radio stations were gone after every turning the ignition key. Have the cable replaced by then I cut it and re-soldered.
For people who therefore it they go get a simple plug and play solution, this is nothing. For people who can deal with a meter and soldering iron is the material.

All in all I think: Not quite what you would expect