33' rockwood travel trailer signature ultralight??

[Girthy]

I'm posting this for my mother, she has a 2010 rockwood, 33' travel trailer, signature, ultralight, cold weather package. She just got her trailer and we were able to go camping together this weekend. She is new to camping and had some questions about her tt. I was able to answer all but one of her questions. She has a typical control center. water/grey/black/pump on. The pump on does turn on her water pump, however, in her hallway, she has another switch, just labeled "pump". it appears it can be lighted? i tried for a while to find what this is, i was unable to figure it out. is it for an accessory that the previous owner didn't get? im clueless please help

[bikendan]

pics would help.
also the model number of the Rockwood, since they make a number of trailers that size.

[Koodog]

I'm guessing a switch the previous owner added. Mine is on the control center and it is lighted. The other switches I have are for water heater and tank heaters. Mine is an 08 8317SS model.

Perhaps it is another switch location for the water pump. Does it work when on?