I am in process of converting my dead 2012 Volt charge cable electronics to utlize the OpenEVSE V-5 board and, relay, and current sensor, All is straightforward until I get to the point of connecting the 5 conductors in the cable itself. I assume that 4 of them are L1, L2, Ground, and Pilot. But I do not know the function of the 5th conductor, nor the pin-out of the plug, nor have I been able (after 40 minutes of searching) to determine the unknowns. I request help in finding the answers.
I believe the 5th wire is for the LED light in the handle.
There is some old discussion that may be helpful over at the volt forum about the conversion.