The module is Velcroed to a bit of the raised side on the tender frame. The speaker is Velcroed in. The rear, painted orangish, LED is in its bracket with a spot of hot glue holding its wires in place. The motor wires are connected to the original connector to the motor in the loco.The white and blue LED wires come from the front of the loco, under the boiler and exit through the cab to the tender. The black wires, running under the boiler, were used for the front LED extension wires and can be seen running under the text noting "LED Wires". 3 Efest IMR 10440 size 350mAh batteries are shown installed in a 3 AAA battery box. That type of battery box is used for small tactical flashlights The loco is waiting for the LocoFi App to be started, and then set on the track for an hour, or less if I don’t won’t to go that long, running session.The loco can be seen running in my other International Hobby Corporation (IHC) 2-8-0 Consolidation post.