CPAP Power From USB-C Wall Plug in 2023 Micro Minnie 2108FBS

[bcborn]

I have several 12v male plugs and I have found them all horrible at keeping a connection. I have 3 female connections in my RV and they have to be wiggled to make contact. I think it is the quality of the male plugs. Check in the male plug for a blown fuse....

It works fine if I power the new cigarette lighter socket directly from the battery. So fuse cannot be an issue.

The round three terminal round rocker switch has not wiring markings.

The gold terminal I wired ground, the center terminal power from splice and the other outside terminal to the pos on cigarette lighter socket.

I have seen schematics where the load (outer) and power (middle) are reversed. Switch light illuminates when switch is on.

Would this make a difference?

I took the neg wire from the splice to the negative of the cigarette lighter socket and then back to the negative on the toggle switch.

I have yet to try bypassing the switch to see if the CPAP works.

 

[bcborn]

Winnebago was no help as they do not have schematics for the wire run to the USB/USB-C wall jacks.

I put in a dedicated run from a fuse panel I installed in the pass-thru up into the front wall to the cigarette plug I installed and everything now works as expected.

For the life of me I have no idea why tapping into the USB/USB-C feed wires will not power up the CPAP Machine. A Mystery I guess.

Idaho Hunter (Mike) tapped into the same wires for two reading lights and they worked for that.