Got a 1999 plymouth grand voyager n the headlights wont turn off

SOURCE: 1999 plymouth grand voyager expresso .3 litre 6 cyl , how do I change the air filter?

Next to the battery & mount onto the upper frame at the front of the car an air filter housing with 2 self tapping bolts. Remove these and disconnect serveral hoses and lift back, Below this is the air filter housing itself. clips are on the side slip off, and replace filter.

SOURCE: R&R Starter 1999 Plymouth Voyager w/3.3 V6

The likely problem is the contacts in the solenoid on the side of the starter. Does the solenoid click when trying to start the car? Disconnect one battery cable before doing anything with it. I fixed mine by removing the end of the solenoid case and building up the badly eroded input terminal bolt head with silver solder--worked great. You have to work under the car to get to these parts--use jack stands for safety.

SOURCE: How do I change the Driver's side Front Headlight

1. Unscrew the three screws that secure the headlight assembly to your Dodge Caravan. Put the screws in your pocket or another safe place, so you won't lose them before reinstalling the headlight assembly.
   
2. Pull the headlight assembly away from the front of the vehicle. Turn the bulb retaining ring counterclockwise to unlock the electrical connector. Remove the electrical connector from the bulb assembly by pulling it straight out.
   
3. Replace the old bulb with a new halogen headlight bulb. Connect the electrical connector and turn the bulb retaining ring clockwise to lock the bulb into place.
   
4. Reinstall the headlight assembly and secure the screws tightly before closing the hood. Turn on your Dodge Caravan, flip on the headlights and verify they're working properly.