Question on EXP 29A Jayco

[chopshop]

I have yet another question for you all out there.

I have a EXP 29A trailer with a queen slide out located in the rear of the trailer (hard side slide). After I slide out the bed, near the rear of the trailer, on the ceiling, in the middle of the trailer, there is some sort of white plug in, maybe 1 1/2" dia. where it is attacthed to the ceiling and approx. 1" in length (cone shaped). It looks as though it is a female connector for a 1/4" jack.

Does anyone have any idea what this is for, I've looked through the manual, to no avail. I'm stumped

Thanks,
Keith

[Topflight]

That's a 12V receptical for plugging in a light, or light fan combo, or even your computer if it's 12V.

Our 21M came with two light fan units for lighting and cooling the bunk ends.

[chopshop]

Ah Ha, I knew they were there for a reason, Thank you.