The 10 inch straights have both terminal lugs. The Curves may have just the outside lug. Lionel Fastrack hook-up wires work with either Super Streets or E Z Streets.
Be careful if you solder to the tracks, as Super Streets is only plastic and may melt some. Try to see if some H.O. track wire connectors that are pre-wired may fit between sections of the track instead of just the track pins.
Lee Fritz