I have a new headlight switch and it looks like it works at the switch. I don't have a battery in the car and have been using an old battery that needs a charger on it to even make the starter click. Could it be part if not all of the problem if the battery is not good and the charger can't put out enough to power up the system? I am not getting anywhere on this and I hate to buy a new harness until I find the problem. I know getting a battery would answer this question but I will be doing body work on this car for a few months and was trying to avoid buying a new battery until I new I would need it.