I run the 180 Watt power bricks (one per channel). These work extremely will with the TIU.
Just as an FYI, in the early days, when the TIU's did not have fuses in them, I melted one. I was running two standard gauge passenger sets with lights and drew too much current.
I did some testing later on, and found out that the circuit breaker in one of the bricks would not "pop" under any circumstances.
The brick was replaced, the TIU was replaced with the newer version with fuses, and ammeters were installed.
I did not know about what Frank stated (above) about cutting off the plugs, at the time. Those plugs have been gone for nine or 10 years now...
