Is there a way to change cigarette lighter charger port to only have power while truck is on?

[Wackem1]

Wondering if this is possible on gen 3? My past GM trucks you could do this by simply moving a fuse! If anyone knows fuse location or how this can be done, please share. Don’t wanna leave charger plugged in all the time.

 

[ihoffland]

Charger for what? as long as a device is not plugged in, it won't draw any power.

That being said, Ive ran a Dometic fridge full time in every vehicle I've owned in recent years and have never once ran the battery down...

 

[JayRods]

I believe it only stays on for 20 min after the truck is turned of. you would have to check on that though. I have not timed it.