[davester3500]

First, it's relatively inefficient to use the A/C outlet for this, as you are converting to A/C, and then back to D/C. It would be better to use one of the USB ports or a cigarette lighter plug...

Second, was the engine running when you tried this?

 

[davester3500]

I have a 2024 high country with no switch and outlets do not work with truck running or not running. Dealer can't figure it out. Any help??

go to another dealer.

 

[davester3500]

No, also I wouldn’t know which fuse it is. Would it be in the manual?

Did you look in the owners manual? It would only take a couple minutes to find out....