Last year my genset stopped working in my MH. I rarely used it anyway except to exercise it. However, I did use it whenever we had a power outage due to a storm to keep my refrigerators cold. I have g...
I know Fords F150, they set it up to do this and actually have an upgrade that puts some 120v outlets in the bed.
The question is does your toyota have a 120v outlet or if not, does the 12v come from the big battery bank. Most propulsion battery banks are not 12v, so it wouldn't surprise me if the big battery bank is at a higher voltage and the 12v outlet is pulling off the small battery.