![Wire 12V / 4.5V with Two Leads [Undetermined Length]](https://cdn.rebrickable.com/media/parts/photos/7/x466-7-25bbfc56-279c-42a8-977e-b193111f3579.jpg) | | 74503 | 2 | Wire 12V / 4.5V with Two Leads [Undetermined Length] |
 | | 996ac01 | 4 | Electric Connector, 1 Way Male Rounded with Hollow Pin (Banana Plug) |
| | 996ac01 | 4 | Electric Connector, 1 Way Male Rounded with Hollow Pin (Banana Plug) |
![Microphone, Train 4.5V 4 x 4 x 2 with Vertical Plug Sockets]() | | upn0311b | 1 | Microphone, Train 4.5V 4 x 4 x 2 with Vertical Plug Sockets |
![Whistle, Train 4.5V, Thick]() | | upn0312a | 1 | Whistle, Train 4.5V, Thick |
![Control Unit, Train 4.5V Whistle Brick 4 x 8 x 2 with Forward/Stop Functions]() | | upn0313a | 1 | Control Unit, Train 4.5V Whistle Brick 4 x 8 x 2 with Forward/Stop Functions |
| | 74503 | 2 | Wire 12V / 4.5V with Two Leads [Undetermined Length] |
| | 996ac01 | 4 | Electric Connector, 1 Way Male Rounded with Hollow Pin (Banana Plug) |
| | 996ac01 | 4 | Electric Connector, 1 Way Male Rounded with Hollow Pin (Banana Plug) |
![Microphone, Train 4.5V 4 x 4 x 2 with Horizontal Plug Sockets]() | | upn0311a | 1 | Microphone, Train 4.5V 4 x 4 x 2 with Horizontal Plug Sockets |
![Whistle, Train 4.5V, Thick]() | | upn0312a | 1 | Whistle, Train 4.5V, Thick |
![Control Unit, Train 4.5V Whistle Brick 4 x 8 x 2 with Forward/Stop Functions]() | | upn0313a | 1 | Control Unit, Train 4.5V Whistle Brick 4 x 8 x 2 with Forward/Stop Functions |
