I have 3 independent loops on my layout - 2 of which are hooked up to the "Fixed" channels of my TIU (both work fine running Proto 2 engines). I hooked up a 3rd independent loop to the "Variable 1" channel of the TIU. I can run conventional engines on this track with no problem. I thought I could run Proto 2 engines on this channel also. I am having difficulty figuring out the process that would enable me to run Proto 2 engines. Any help would be appreciated.
I did purchase Barry's book but couldn't find any reference to this.