If you can solder you can build a professional one for $ 5.00
18 deg Female Terminal 16 Pin OBD 2 II Connector Diagnostic Plug DIY Shell Adapter | eBay
USB DC 5V to DC 12V Step-Up Module Converter Cable 2.1x5.5mm Male Connector Plug
I have built a few for friends
Paul
18 deg Female Terminal 16 Pin OBD 2 II Connector Diagnostic Plug DIY Shell Adapter | eBay
USB DC 5V to DC 12V Step-Up Module Converter Cable 2.1x5.5mm Male Connector Plug
I have built a few for friends
Paul