Review on 🔌 Weego JSOBD-1: OBD II 12V Memory Saver, Settings Keeper with 5mm Barrel Jack Output by Ashley Ray

I think it's a DC barrel connector (5.5mm OD x 2.1mm ID) used for some accessories. leave nests. I have a DBPower jump starter and it plugs into the auxiliary socket. However, the power indicator does NOT come on until I jumper the chassis ground pins on the data link connector when I am not in the vehicle. Tomorrow I'll try to use it and we'll see if the LED stays on after disconnecting the car battery. If I jumper the chassis ground pins I see power (12V) on pin 16. If this works on the car I can upgrade it to 5 stars. YMMV.