2015 silverback low point drains

[kcmusa]

I picked up a used silverback a while ago. I was under the trailer installing a sewer holder and I see what appears to be more low point drains. I know the water tank low point drain is on the other side of the entrance door, a little more than half way down the trailer.
I found on the trailer door side almost under it more drains, what are they for?
I did open them and saw antifreeze come out. But what are they connected to?

[TimKTuttle]

I have a 2016 29IK so I am sure they are similar.
The first drain you mention is to drain the fresh water tank as you said.
You will probably see the overflow near there as well.
The drains near the door are the “low point drains”.
These are used to drain all of the water lines when winterizing and de-winterizing.
That is why you saw antifreeze.
One should be red and the other blue to represent hot and cold.