Hi all! Here is an info how to tap into the rear view mirror connector with dimming function of the Jeep WK 2010 Limited to use it for dash cam or radar detector. The power is switched ON and OFF by ignition key.
I used following parts:
1. 12V to 5V DC converter-
DC 12V to 5V 3A Power Converter Module with Dual USB Output for Car Boat | eBay
2. Two gold plated pins from old VGA PC male connector.
DB15 Male Crimp Connector Kit - Plastic | ShowMeCables.com
It is pretty simple DIY process.
Solder two pins to the negative (black) and positive (Red) converter input wires. Open the lid on the passenger back side of the rear view mirror. Press the tab on the big 16 pin connector inside and pull it out. Take small pliers, stick and press firmly your pins into the corresponding slots on the back of the connector next to the wires. Positive (Red) into slot 13 (Orange/Yellow strip wire) and Negative (Black) into slot 8 (Black wire). Tie down input wires to the mirror wire cable with small cable tie and insert the connector back. Close lid on the mirror and mount converter with Velcro to the convenient place of your choice. Converter may even fit into the lid compartment of the mirror but I didn't try it. Now you have a fully switched with ignition key 5.5V 3Amp hidden power outlet for your devices.