What is this part?

[CenTex]

I found this sensor dangling from the left rear corner of my new 2018 3500 SRW. It looks like a sensor that pops into a cutout opening. However, there is no place for it to fit. Anyone know what it is?

 

[2Evil4U]

Kinda looks like it might be one of the reversing proximity sensors. Not sure though.

 

[CenTex]

I have the ParkSense Front/Rear Park Assist System. It is not one of those sensors.

 

[sag2]

Is there one on the other side? Blind spot sensor that shows the triangle in your mirror when someone is in your blind spot?

 

[HookMeUp]

Looks like a switch, perhaps it is the light switch for the LED bed lights?

 

[Deleted member 995608]

Flux capacitor?

 

[CenTex]

Not one on the other side. There is about 12 to 15 inches from where the leads come off the main harness at the frame. Looks like it is designed to pop into a cutout in the bumper or body. I can not find any place where it might mount within that distance. I was hoping someone had it on their vehicle and could identify it.

Thanks for the suggestions.

 

[CenTex]

Found it! It apparently it is a switch for the bed LED lights. There is a cutout just below the LED light on the right side of the bed.