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7 Pin Trailer Wiring reocating to Bumper

Discussion in 'Technical Chat' started by Isthatahemi, Apr 24, 2010.

  1. Apr 24, 2010 at 5:10 PM
    #1
    Isthatahemi

    Isthatahemi [OP] Well-Known Member

    Joined:
    Apr 29, 2009
    Member:
    #16582
    Messages:
    1,156
    Gender:
    Male
    Vehicle:
    TRD OFF ROAD
    BFG AT's, Weathertechs, Hoppy's brake controller.
    I have seen a couple threads on doing this mod, the main one on this site involves cutting a 2" hole in the bumper. In the mod on Toyota Nation, the guy drilled 2 holes to mount it, which is not a good idea either. I instead relocated the 7 pin harness where the drivers side light for the license plate. I chose this instead of hacking the bumper, given the fact that my first bumper rusted out, I did not want to cause a warranty / lease return issue.

    1. Remove the driver's side license plate light, and the plastic insert that the mounting screw threads into.
    2. Unbolt the 7 pin wiring, and the bracket from the receiver.
    3. Cut tape and fasteners holding the 7 pin wiring.
    4. Disconnect the wire connector located about 18" from the 7 pin harness.
    5. Trim the 7 pin harness, mostly around the top corners, I also trimmed the tab on the bottom, leaving it mostly intact, just thinner so it can still grab the bumper when inserted. (some trimming info, from a thread that I found http://www.toyotanation.com/forum/showthread.php?p=1652523&posted=1 )
    6. With a "5/32's drill bit and drill a hole in the side of the 7 pin harness, line it up with the existing screw hole for the license plate light.
    7. Notch the harness so where the new screw goes, is a flat surface.
    8. Trim the harness and it fit snug.
    9. Wash the area with Isopropyl Alcohol.
    10. Pull it out just far enough, and applied a heavy bead of black RTV silicone.
    11. Push the harness on level and flush. Make it look perty....
    12. I used a black powder coated screw, and threaded it into a piece of pressure treated wood. (a little hillbilly, I know....)
    13. Zip tie and tape all wires (use a brand name electrical tape)
    Voila, a completely reversible mod, that uses no holes, and causes no rust. Some after pics...

    IMG_4072.jpg
    IMG_4073.jpg
    IMG_4074.jpg
    IMG_4075.jpg
     
  2. Apr 24, 2010 at 5:12 PM
    #2
    Isthatahemi

    Isthatahemi [OP] Well-Known Member

    Joined:
    Apr 29, 2009
    Member:
    #16582
    Messages:
    1,156
    Gender:
    Male
    Vehicle:
    TRD OFF ROAD
    BFG AT's, Weathertechs, Hoppy's brake controller.
    I should've mentioned, this mod took 30 minutes, and it was easy.
     
  3. Apr 24, 2010 at 8:35 PM
    #3
    guru42

    guru42 Member

    Joined:
    Feb 25, 2010
    Member:
    #32116
    Messages:
    7
    Gender:
    Male
    Manitoba Canada
    Vehicle:
    2010 access TRD offroad
    Pop and lock,bed mat,tint.Access LE tonneau,Weathertechs,BFG at KO's,G.E ultras,
    That's frickin awesome ! Nice install.I'm doin that tomorrow and also the rearview mirror. Hey are u the dude always ranting on here?
     
  4. Apr 24, 2010 at 8:49 PM
    #4
    colinb17

    colinb17 If at first you don't succeed, don't try skydiving

    Joined:
    Jan 6, 2008
    Member:
    #4127
    Messages:
    18,585
    Gender:
    Male
    First Name:
    Colin
    Lusby, MD
    Vehicle:
    '07 TRD Sport 4x4
    Build thread in sig...
    good writeup!

    I highly recomend this mod, i did mine about a year ago after bending my mount multiple times. only difference is that i drilled a hole and put it between the plate and the light (since then i have replaced the bolts with black ones that blend in....this is the only pic i have though).

    [​IMG]
     
  5. Apr 24, 2010 at 9:16 PM
    #5
    Isthatahemi

    Isthatahemi [OP] Well-Known Member

    Joined:
    Apr 29, 2009
    Member:
    #16582
    Messages:
    1,156
    Gender:
    Male
    Vehicle:
    TRD OFF ROAD
    BFG AT's, Weathertechs, Hoppy's brake controller.
    Yes, my 2010 is has not been what I expected, but I have more posts helping than complaining, maybe.....:D
     
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