Installing OEM 7 min trailer wiring harness on a 2005 pathfinder

[dsm0274]

Bought an OEM 7 pin harness form dealership for $65 after tax. my 2005 pathfinder already had a 4 pin plug but i wanted to upgrade to pull my friends landscaping trailer. The instruction that came with it are very good and the project would have only taken about 20-30 minutes had there not been a blown fuse.(i bought the car used so i think it was already blown when i did the conversion. I took some photos as i went along to help the next guy and i can answer some basic questions but the project really is very easy, on scale of 1-10 its about a 2.

This is the bag the harness came in from the dealer showing the part number



This is what comes in the bag





These are the only tools you should need, i used the needle nose pliers to get the brown wire clips removed fromthe old harness.



This is the only bolt that holds the old 4 pin harness in



Nissan drilled and tapped these holse for the mounting bracket already and the bolds supplied fit right in with no problem


This is the existing connection with the 4 pin wiring harness notice the black plug in the one connector, this is the trailer brakes and power wire that isn't used i with the 4 pin connection just remove the plug and the black connector on the 7 pin harness fits right in



This is the mounting bracket after it's installed with the supplied bolts




This was the hardest part, before sliding the connector into the mounting bracket you have to remove the the bolt that holds the bumper on so you can work the wires around behind the bracket the replace the bolt.



After inserting all 3 brown wire clips the 2 connectors are lined up to be plugged into the matching color connectors on the vehicle side


Remember for ease of installation i removed the spare tire, this is the clearance after the tire is reinstalled

[dsm0274]

let me know if this was helpful

[dsm0274]

one more quick note after the installation i couldn't get the left turn blinker on the trailer working. both blinkers on the car worked, and on the trailer the stop lights,running lights and and right hand turn signal worked but not the left hand signal. I checked fuses in the glove box and engine compartment and found nothing wrong, then after a little more internet research i found that Nissan placed the fusses for the trailer left and right turn signal in the F.....ing dumbest possible place (IMHO). To get to them i had to take off the knee panel under the steering column which isn't hard but takes a little time---almost 10 minutes to get to the stupid little fuses here's a picture of them.

[NissanTech]

Thank you for the pictures! I'm sure many users will find the information very helpful.