2003 2500 dodge ram right dim headlight is on left isnt when brights go on right goes off and left goes on, turning signals flash fast, no lights work, changed all bulbs, no brake lights, right side rear flasher only works, I cleaned all battery connections and tightened, still doing the same thing, dealer says needs new fuse box without checking it out first.

SOURCE: Turn signals dont work headlights dont dim heater fan doesnt work

Did all these problems happen all at one time?? If so you may have a bad body ground. Try running a electrical wire from the (-) negative side of the battery to the body and see if this works. Be sure this wire is to a place with no paint as low voltage electricity will not flow through paint.
A). If not try replacing the turn signal flasher for the turn signal problem. This is usually the culprit and it's easiest and cheapest to replace. The turn signal flasher will be found under the driver side dash next to the hazard flasher. Turn the hazard flasher one to locate it. If you want try swapping the turn signal flasher with the hazard flasher to see if this fixes it. They are the same style flasher.
If this doesn't work you may a faulty turn signal switch or some wiring issues.
B). It could as simple as the head lights bulbs need to be replaced, it's rare but I have seen when both bulbs blew at or near the same time. If your able check the voltage at the head sockets.
C). Could be a bad blower motor or switch. I'm not sure if these models have a resistor block or not. The resister block controls the electrical current going to blower motor which controls the speed of the blower fan.

Mike Butler

• 6674 Answers
• Posted on Apr 13, 2009

SOURCE: 1993 Dodge Shadow...left turn signal won't flash

If you have trouble finding signal flasher, turn your right side blinker on, and follow clicking noise to flasher.

SOURCE: 2002 ram 1500 single cab ext light issues

sounds like a faulty underhood fuseblock..have seen lighting issues with these components

Ronny Bennett Sr.

• 6988 Answers
• Posted on Jul 05, 2010

SOURCE: Rear left turn signal and brake light does not work

Use a test light to test the socket at the problem,see if there is 12 volts at the socket.Also,make sure the correct bulbs are being used,the wrong bulb will not make contact.

SOURCE: 1995 Dodge Dakota signal light and brake lights quit

I had the same problem that the brake light / turn signal on the right side didn't work (in the 2006 Dodge Caravan it's the same bulb). After a long search I found the problem: There was corrosion on the contact of the bulb assembly. After scraping off the corrosion everything works now.