I've got twin electrics on my towing car and these match the twin sockets on the Caravan so I can tow with brake lights, lights, indicators all working. However, I have another car that is old and only has 1 towing socket. I hooked it up to the Caravan but it only worked the rear lights, no brake lights or indicators so is useless. I've trawled the web trying to find if there is an adaptor to make it twin electric but have had no luck. Does anyone know how I can cheaply convert my single socket to a twin or do I need to just get a whole new electric set up? Thanks in advance for any advise.