This will seem awfully basic for some of you veteran EV'ers but I need some help with planning how to tie in to shore power. I have run a 12 ga 3 conductor cable (inside a water tight flexible conduit) into the gas filler area. Of course, I removed all the gasoline plumbing and I now have a terminated cable inside the gas filler access door. I have looked at what many of you have done by way of a three (or four) conductor male plug attached to the car and cannot figure out if you are using a 301 ELRV (30 A, 125 V non grounded three conductor plug) or a 6353 ELRV (50 A, 125/250V with ground) plug. I am at least hundreds of miles from the nearest public charging station so I don't think I need (or could afford) a J1772 or equivalent. I will be charging with 220V from my garage nearly all the time, but would like to be equipped to top off with 110 VAC when the occassion arises. What connector and where to buy, please?