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edwardmk · 5th March 2021, 11:56

Presumably you could connect a 12v bulb or similar to pin 9 and earth/chassis. If the item stays lit/on when the ignition key is out, you have a potential flat battery if anything is left connected to the tow socket.

5th March 2021, 11:56	#3
edwardmk Gets stuck in MG ZT 260, Rover 75 Connie SE auto Join Date: Feb 2013 Location: Redruth Posts: 984 Thanks: 1,324 Thanked 399 Times in 271 Posts	Presumably you could connect a 12v bulb or similar to pin 9 and earth/chassis. If the item stays lit/on when the ignition key is out, you have a potential flat battery if anything is left connected to the tow socket.