In theory, yes they will extend and retract. I have done it many times with mine, but my TT, has a small light slide. It goes in and out at its normal speed.
If it is a big heavy slide, I would expect it might be slower than usual, as the 7 pin does not provide a lot of current.
What do you have for a 5ver?
2012 Jayco X23B
2020 Ram Laramie 3500 SRW Air ride 50Gal fuel tank.
2007 Dodge Dakota Quad Cab (retired from towing)
Equal-I-zer 4-Point Sway Control