Recently outfitted my lionel milk car 3662 with the electric rr company Mini HC v2 Lionel Milk Car Kit, to make it work with Lionel TMCC and MTH DCS in lieu of the operating track method.
Programmed it per procedure with my legacy controller. Everything works great. Cant' get it to respond with DCS per the instructions. Contacted Ken at Electric rr. he could only suggest that I'm not doing it right or a bad board. He has no experience with DCS.
Don't believe the board is defective, because the operating reefer car is doing the same thing.