The trailer plug should have come from the factory pre-wired: a 4-wire plug standard or a 7-wire plug if the optional tow package was installed. If the harness has not been disconnected or come undone by accident, either you have a blown fuse or a bad relay. These are separate for the trailer/tow harness (i.e. your regular tail lights can be working fine but the trailer/tow fuse and/or relay may be bad). You manual should show you where your particular fuse/relay is located. Don't trust visual inspection; test then replace the defective part.
you open the tailgate and look at the taillight and there will be two screws on the inside of the tail light. you just take the screws out and pop the light housing out.
how to change the rear tail light bulb on a 2004 Nissan maxima
Your owners manual will detail where the fuse block(s) are and which fuses are for what. If it ends up being a bulb, see sources and related links below for bulb information.
pull down the tailgate and the screws to take off the tail light cover. pull that off and it is the bottom bulb
Sedan or hatch makes a difference
To replace the tail light bulb, open the tailgate and on the inside there is two little bolts. Take those out and the tail light should slide out, just turn the bulb holder and it comes out.
how to change tail light bulb on Toyota sequoia
How do you change the tail light on a 2001 toyota sequoia
How do you install passenger tail light kit for a 2004 grand cherokee?
to replace tail light, you need to lower the tailgate> On the side of the bed that is covered by the closed tail gate are a couple of screws.Remove these screws and the tail light assembly can be removed.
First of all pop the trunk and then use a screwdriver to pull the light out and go to Canadian Tire and purchase a new light.
lower the tail gate and look in tail gate jam. bolts are where the cables that hold tail gate are anchored
on the tail light problem - unbolt the tail light from inside th truck -the hold tail light assemble will come out - it is recommended to change all the blubs your all ready there