1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

4/7 Pin Multi-Tow Wiring Install

Discussion in 'Towing' started by johnnychimpo711, Jul 20, 2014.

  1. Jul 20, 2014 at 3:43 PM
    #1
    johnnychimpo711

    johnnychimpo711 [OP] Well-Known Member

    Joined:
    Sep 15, 2012
    Member:
    #87016
    Messages:
    57
    Gender:
    Male
    Olympia, WA
    Vehicle:
    13 PreRunner SR5
    Debadged, Black T emblem, Magnaflow-Dual exit, Hidden CB install, dual FireStik antennas, Heated mirrors with integrated signals, blacked out windows, Bike rail mounts, CLIII hitch, Brake Controller, 4/7 pin trailer plug, accessory power fuse block, transmission cooler
    I've been a member here for a while, and I typically only come on here when I have issues with my truck, or when I'm trying to install something. This time I get to give back a little. I recently decided that I was going to convert a cargo trailer to a toy hauler, and in doing that, I found that I need to make some upgrades to my Tacoma. First thing's first, I am not an expert at this; I just think about how I can do something to make it look "factory". That being said, this is just the way I did it, use these photos as reference if you feel the need to do this. My Tacoma did not come with the "towing package", and I wanted to be able to connect the cargo trailer and use the included trailer brakes. I ordered the following parts:

    Hopkins vehicle wiring kit #40975 Link and #40985 Link
    Draw-Tite Activator III brake controller

    [​IMG]

    For this initial thread, I will only discuss the 4/7 Pin Multi-Tow wiring harness install. I really want to focus on the multi-tow connector for this post, and I'll go back and discuss the wiring bit later. The mount that comes with the kit is perfect for the under-side of the bumper, but some modifications to the trim are required.

    [​IMG]

    The instructions in the kit explain the wiring bit better than I can, so here are some pics

    [​IMG]
    [​IMG]

    In order to mount the connector, you must remove the trim for the bumper. There are two snap rivets on top, and two 12mm bolts on the bottom.

    [​IMG]

    Once you have the trim loose, mock-up the cut where the mount will go. I used a pencil and just held the mount approximately where I wanted it to go. Take your time with this bit, otherwise it will look ratty and "unprofessional".

    [​IMG]

    Cut inside the line, and continue to trim out the piece until you get the snug fit you want.

    [​IMG]

    Once you get it where you want it, bolt everything up. You may have to modify the mount in order to get it to fit.

    [​IMG]
     
    Last edited by a moderator: Jan 19, 2016
  2. Jul 24, 2014 at 9:15 PM
    #2
    TreeFortRichard

    TreeFortRichard Hmmm..$o many repairs?

    Joined:
    Jan 18, 2013
    Member:
    #95515
    Messages:
    2,769
    Gender:
    Male
    First Name:
    Brian
    Massachusetts (Central)
    Vehicle:
    '10 Access 4x4 SR5 Manual
    Nice write up...I was debating having UHaul install or DIY and it looks like I can save $150 doing it myself..
     
  3. Aug 15, 2014 at 6:42 AM
    #3
    johnnychimpo711

    johnnychimpo711 [OP] Well-Known Member

    Joined:
    Sep 15, 2012
    Member:
    #87016
    Messages:
    57
    Gender:
    Male
    Olympia, WA
    Vehicle:
    13 PreRunner SR5
    Debadged, Black T emblem, Magnaflow-Dual exit, Hidden CB install, dual FireStik antennas, Heated mirrors with integrated signals, blacked out windows, Bike rail mounts, CLIII hitch, Brake Controller, 4/7 pin trailer plug, accessory power fuse block, transmission cooler
    I totally agree...DIY is way more fun anyways. I installed my brake controller using the towing bible help...ran my own 10awg wire. Feeling accomplished now that I finally picked up my 7x14 enclosed trailer, and the brakes work!
     
  4. Oct 23, 2014 at 10:33 PM
    #4
    Newlife

    Newlife Well-Known Member

    Joined:
    Jun 22, 2013
    Member:
    #106845
    Messages:
    8,458
    Gender:
    Male
    First Name:
    Adam
    Knoxville TN
    Vehicle:
    2020 t4r orp
    Bone f’n stock for now
    sub'd for refrence
     

Products Discussed in

To Top