I want to hard ware an extension cord the tesla 110/120V adaptor. I cut the end off the adaptor. There are 7 wires in there. 3 main voltage Green, Blue, Brown. Then there are 4 very small wires White, orange, blue and purple. I assume these are sensor wires to tell the tesla it's 110/120v not 220/240. Does anyone know where the connect to?