Locomotive: Tillig BR215 (02721)
Decoder: Flieschmann w/o sound NEM651 (6 pins)- FLM-685302 Stecker
Digital format: DCC
Interface: No
Milling: No
Diffculty: Easy
Remove the cover
Desoldier board from teh motor and 4 power cables
Cut the cube
Soldier pins of the decoder and paths on the board.
Put insolation band on bottom side of the board where the decoder touches the board
Cut one of the cabin plastic where the decoder is. Both cabins shown on picture.
Here is assembled decoder and cut cabin
Test run: