Per connection 1. On the guide it's only showing Ignition, Data. Theres no 12v constant, or Accessory, or Start. So I'm just wondering why these connections are not needed... I mean literally looks like 2 or 3 wires on the 20 pin to use, and the 2 on the Red plug. I'm so lost on how this is working. Videos online show tapping into the main loom and grabbing the accessory, and starter, and constant to start the vehicle. Then the 2 wires for the bypass. Also last question do I need to hookup the obd2. Is that the same as data ?