Add a USB Port to your TVP Vivaro, Primastar, Traffic 

No there's not but there is a hole ready for one. Technically he added another 12v socket then pushed in a USB adaptor. You can just get an actual usb socket to fit in a save adding the 12v socket, they are about £8 on eBay with a like voltage meter in them that is handy to keep an eye on the vans main battery.

there's one one the drivers side but a hole for a second on the passenger side.. so he's piggy backed off the drivers side to the passenger one

The third cable is connected to the lights so the outside of the socket lights up when you turn the lights on