Re: 12v Bedroom Accessory Plug Reply #20 – September 15, 2014, 06:38:47 pm I tied it into the 12v fuse block at the end of the bed. There was a circuit labeled "optional 12v accessory" that powers a plug in one of the front bays and I think that's all it does. We have never used that plug so it will pretty much be a dedicated circuit for the CPAP. I also confirmed with the manufacturer that I do have the right plug and that it can take a normal range of automotive voltages. They couldn't give me an exact range but they say it is designed to be used in cars and that it should be fine. I plan to unplug it anytime the engine, generator or shoreline are charging. I may still add the voltage regulator later. For now, I'm calling this one done and moving on down my list. Quote Selected