let me start out telling you what i have and what i'm trying to do.i have lionel legacy system 990 hook up to mth dcs tiu wifi system.thats all hook up and running.what i need help with.i was told i would need to get all the features from my tmcc engine i would need to get lionel ser 2 6-81326 or do i need 6-81325.i think i need only the 6-81326.i already have the lionel db9 cable to pdi cable with power supply.could somone please tell the correct one that i need.would very much appreciate and help you could give on this.
thank you
brian
