Lance campers that are pre-wired for jacks have the connector with a cover at each corner.
According the Lance brochure for 1995, the Lance squirelite did not have an option for electric jacks.
The brochures for most Lance campers are available from their site at www.lancecampers.com then click on "support" at the bottom of the page.
Edit:
If you wanted to add, you should be able to pull wires inside the camper for all three corners except the passenger rear. For that one, I would come out at the front passenger area and run the wire outside for the passenger rear jack in the corner of the wing.
2015 Ram 3500 4x4 Crew Cab SRW 6.4 Hemi LB 3.73 (12.4 hand calc avg mpg after 92,000 miles with camper)
2004 Lance 815 (prev: 2004 FW 35'; 1994 TT 30'; Tents)