I'm wiring the rear lights on my 2016 Energi for towing behind my RV, can anyone tell me the wire colors for the tail (running) lights and the third (upper) brake light? The harness to the tail gate lights has 20+ wires. There's a purple/gray (or purple/light-green) wire that's hot at the tail lights, but I'd rather not cut it at the harness until I know for sure. The wires are so small, I hate to use a probe on them. The third (upper) brake light is really difficult to remove so I haven't been able to get the color on it. Maybe someone has a wiring diagram or can point me to one.