Hello everyone.
I have the same problem as Mac86 and I have tried to do everything like how Mac86 did.
I connected the positive terminal of the light socket to the positive terminal of the battery and the negative terminal of the battery to the car chassis as ground.
I turned it on and nothing happened except the my AC/DC 14V transformer started smoking.
I then tried it with another car battery charger and that didn't work either.
Could anyone please give me extremely detailed instructions with clear images on how to fix this? @Mac86@clifton 94@TigerFish