Excellent, it amazes me how many different styles of jacks have been used for power over the years. The cheapo Bachmann starter set I got when I got back into model trains uses what appears to be an audio jack to power the track. My old HO set used a very simple set of wires, IIRC.The cable you linked is what I need. Thanks.
The power supply has a connector that mates with the Aux Power Input connection which seems to power the unit but not the track. I found pictures showing the TIU connected in a system. I didn't understand why I had no power to the track. I didn't know how the system is supposed to be connected (I'm new to this).