Frickle everything together and fix the housing parts of the plug with gel glue.

Add textile glue tape around the cable and the USB plug for better break protection.

If you dismounted the adapter also, you need to remount it again. Take care of Zugentlastung and the transparent plastic part for the LED are positioned correctly.

Press the 4 clamps (GND connectors) and mount the housing halfs.

Fill in the fuse, the metal 12V connector, mount the metal ring and screw the plastic ring over the housing parts to fix everything.

Done. Connect your adapter to car 12V plug and your navi. It must startup and will show a message 'TMC receiver detected'.