This is an add-on cable for the Tamiya 1/14 scale back lamps. (Back lamps only.) The tractor and trailer back lamps can be illuminated simultaneously. The tractor and trailer sides are connected with a pin plug. An installation manual is included. This cable is compatible with the genuine LEDs included with the MFC. This cable is for the MFC-03, which has two back lamps on the tractor side. If your tractor has only one back lamp, please use the MFC-01 version, which is sold separately.