Low Point Drains leaking

[brazos235]

I got this smaller 5th wheel from someone who didn't really know about them and just had someone else "winterize" it. It seems that the low point drains are leaking, and might have frozen & busted inside or under the floor. The underside of the 5th wheel has a fabric covering, under the plywood layer. I think that you could probably cut the fabric, and possibly see if the drains were leaking at that point. I looked at the lines under the bathroom vanity, and they appear to be Ok inside the unit. Does anyone have any experience with this? My 5th wheel is a 24' Brazos - Skyline - by Layton.

[jesilvas]

Just find the leak. You're on the right track.
Might be as simple as them leaking at the point where the plug goes into the lines under the trailer.