I thought I'd pass this along with the cooler weather coming on and with the discussion on more heat. I know a lot of us don't have nice warm garages and some that do have too much lift for the Jeep to fit. I am not the originator of the complete idea, I just made some improvements on it.
Thirty plus years ago I was working on the railroad, my foreman was talking about how he put a space heater in his truck turned on, plugged it into the end of an extension cord every night and plugged the other end of the cord in when he woke up to go to work. A few cold morning in the Jeep waiting for the heater to kick in got me to thinking about this idea so I bought a space heater that would fit under the seat.
Now for the improvement. I was not in the mood to traipse down stairs every morning in my underwear to plug in the cord. I already had a Radio Shack wireless remote control system that I had bought for a couple of swag lamps that were hard to get to the switches.
I bought the appliance outlet module and installed it on the carport. I plugged the cord into the Jeep every night and when the alarm went off each morning, I'd shut off the alarm and push the button to turn on the space heater. By the time I showered, shaved, etc., the Jeep was nice and toasty and lasted until the engine heated up to get warm air from the heater.
And yes, I meant that I plugged in the Jeep. If you look closely in the picture below, you see a round hole under the door. Behind the hole is a motor base male plug with a female on the inside. The heater stays plugged in and all I have to do is plug the cord into the hole in the Jeep.