Getting Repair manuals or building drawings.

[OilingRocks]

Has anyone found a way to know where wires, pipes, and tubing are run? It seems that some mods would be much easier is you had a general idea.

i'm not an electrical engineer, but wouldn't it be better to charge cell phone and run low voltage devices off the 12v DC rail in a coach?

 

[danemayer]

If you're running off the batteries, yes it would be more efficient to run your 12V devices directly from the batteries rather than have an inverter changing 12V DC to 120V AC so you can run an adapter that converts the voltage back to 12V DC.

Sometimes people tap into the 12V at a light fixture or light switch.