Electronic Control Unit (Forward - Stop)

Unknown 4.5V

The manufacturer has approved the data, but no images.

Manufacturer page

Source: Rebrickable. Data from Rebrickable (rebrickable.com)

Parts list (13 pieces, without spare parts)

How many times will you build it? Include spare parts

Description	Color	Count
Electric Connector, 1 Way Male Rounded with Hollow Pin (Banana Plug) 996ac01	Blue	4
Electric Connector, 1 Way Male Rounded with Hollow Pin (Banana Plug) 996ac01	Red	4
Wire 12V / 4.5V with Two Leads [Undetermined Length] 74503	White	2
Control Unit, Train 4.5V Whistle Brick 4 x 8 x 2 with Forward/Stop Functions upn0313a	Trans-Clear	1
Microphone, Train 4.5V 4 x 4 x 2 with Horizontal Plug Sockets upn0311a	White	1
Whistle, Train 4.5V, Thick upn0312a	Black	1

Part images: LDraw library (ldraw.org), license CC BY 4.0. Part data: Rebrickable.