What I would do is to use what connects well to the EZ-Track at that one spot, and I would also look seriuosly at at least one other pair of feeders on the opposite side of the rails system for a modestly sized loop. The end that goes into the output terminals of the DB150 should be twisted and tinned wired in the 20-14 gauge range, depending on the size of the rail system and the distance those wires had to get to the rail.
By tinned I mean you wind the nice 'n tight so they can be inserted into the DB's receptacles, but also tinned with solder to keep them nice 'n tight at that end. If you have to snip off a different connector for that end, so be it.
Crandell
You can buy a cable that fits the EZTrack, or you can modify the one you have.
You didn't indicate how much track you have. EZTrack uses standard joiners. You can purchase, or make, joiners with wire soldered to the bottoms and use them instead of the joiner that come on the track.
Dave
Lackawanna Route of the Phoebe Snow