139A-1
Electronic Control Unit (Forward - Stop)
Building instructions
The building instructions are on the official LEGO website. We do not host any instructions ourselves; the link below takes you to the official page.
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Parts list – 139A-1 Electronic Control Unit (Forward - Stop)
6 lines, 13 pieces
| Image | Part | Name | Colour | Quantity | Note |
|---|---|---|---|---|---|
| upn0313a | Control Unit, Train 4.5V Whistle Brick 4 x 8 x 2 with Forward/Stop FunctionsElectronics | Trans-Clear | 1× | ||
 | 996ac01 | Electric Connector, 1 Way Male Rounded with Hollow Pin (Banana Plug)Electronics | Blue | 4× | |
| 996ac01 | Electric Connector, 1 Way Male Rounded with Hollow Pin (Banana Plug)Electronics | Red | 4× | |
| upn0311a | Microphone, Train 4.5V 4 x 4 x 2 with Horizontal Plug SocketsElectronics | White | 1× | ||
| upn0312a | Whistle, Train 4.5V, ThickElectronics | Black | 1× | ||
![Part 74503 Wire 12V / 4.5V with Two Leads [Undetermined Length] in White](https://cdn.rebrickable.com/media/parts/photos/15/x466-15-d2588fde-efc4-4354-9c4b-2453fd6c76da.jpg) | 74503 | Wire 12V / 4.5V with Two Leads [Undetermined Length]Electronics | White | 2× |