So I am guessing if I have a 180 brick I can connect to track as follows;
6 Make your own Cable: Not me!
7 Buy pre made cable from Lionel ( This looks like easiest way) but are they available ?
Thanks
The Lionel cable set (#6-14194 TMCC TPC Cable Set) would work for you. I tried to get one of these from a dealer near me several years ago and it never came in. I finally gave up and found PH-TIU adapters at CT McCormick Hardware, which were perfect for my application. CT McCormick shows the Lionel cable set as 'In Stock' and others may now have them as well. In your situation I would try for those first.
However, if all else fails, the PH-TIU adapters that CT McCormick Hardware has are pre-made (I think the make them themselves) for connecting a Powerhouse 180 to an MTH TIU. It has a PH-180 connector on one end and banana plugs on the other. You could either remove the banana plugs or adapt them to connect to your track in someway. The adapter is on their website under the 'Transformers & TMCC' button on the left vertical menu. The Lionel cable set is also located there.
In my setup, I have my PH-180s going first to my TIU (as shown in GRJ's picture above) and Legacy is connected to the TIU output commons, so the McCormick adapters are perfect for me. They are also very well made and use good quality parts, including the banana plugs, which are not all created equal. If you ever add MTH's DCS system they would also work well for that.
But, as GRJ and Moonman say above, the 'make your own' adapters would definitely be the least expensive.