Cig Lighter circuit / Fuse blowing 1966

OK, so I run an iPhone charger plugged into my Cigarette Lighter all the time, and I unplug it when I park the car so the pilot light doesn’t drain the battery. A couple weeks ago, I plug the charger in and I immediately blow the 14A fuse. I disconnected the Cigarette Lighter unit and removed it from the dash. I’m still blowing fuses. The emergency flashers no longer work; I replaced the flasher unit and still no action. Anybody give me a clue as to where I should be looking for this short under the dash?
Thanks! Cliff

OK, so unplugged emergency flasher and reconnected Cig Lighter. No blown fuse! So, the Emergency Flasher was a dealer installed option and I don’t see a schematic anywhere. Does anyone know where I can find a circuitry map so I can trace this short?