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

Question from an electrical "ra-tard"

Discussion in 'Lighting' started by AfroWookie, Jan 28, 2015.

  1. Jan 28, 2015 at 11:51 AM
    #1
    AfroWookie

    AfroWookie [OP] Active Member

    Joined:
    Feb 4, 2014
    Member:
    #122273
    Messages:
    34
    Gender:
    Male
    First Name:
    Ryan
    Portsmouth, VA
    Vehicle:
    09 Speedway Blue DC Sport
    Hey guys, I just order a Blue Sea aux fuse box for my truck. I also have an LED light bar on order. Since I'll be running the extra fuse box, will I need an aftermarket wiring harness? My uneducated mind says no, but like I said, I know nothing about electrical. The lighted rocker switch I got for it has 5 "pins" on it, and in my head (long story short) wire from light to switch, wire from switch to ground, wire from switch to fuse in aux box, power from battery to aux box, am I right?

    Thanks guys
     
  2. Jan 28, 2015 at 2:23 PM
    #2
    fergyz

    fergyz Mmmm...Tacos

    Joined:
    Apr 25, 2012
    Member:
    #77624
    Messages:
    735
    Gender:
    Male
    49th State
    Vehicle:
    06' DBC 4x4 6spd
    who makes the switch? part number for it?
     
  3. Jan 28, 2015 at 2:25 PM
    #3
    geekhouse23

    geekhouse23 The "Liftman" - @DrFunker

    Joined:
    Jul 14, 2013
    Member:
    #108251
    Messages:
    14,593
    Gender:
    Male
    Vehicle:
    2GMGMDCSB4WDTRDFTMFW!! TL;DR
    mostly stock, grocery gettin' Prius
    Sounds like OTRATTW.
     
  4. Jan 28, 2015 at 2:35 PM
    #4
    robssol

    robssol If it ain't broke, leave it the eff alone!

    Joined:
    Jun 4, 2013
    Member:
    #105622
    Messages:
    7,663
    Gender:
    Male
    First Name:
    Rob
    S. Wisconsin
    Vehicle:
    06 Tacoma, TRD Sport, SR5, 4X4, AC
    Frame 2.0, Fog lights anytime, Seatbelt reminder delete, Secondary air filter delete, LED bed lights, Running boards, 2017 Rims, Devil Horns by Andres, Ultra gauge, Cup holder/consol/glove compartment lights, Interior LED conversion, Blue Sea aux. fuse panel, fuse panel mounting plate by Yotamac, ProEFX heated towing mirrors, LED engine bay lights, Redline Quicklift Elite hood struts, Wet Okole Heated Seat Covers, Pop and Lock tailgate theft deterrent mod 2.0, Plasti-dip rear bumper. Decal free visors, Washable cabin air filter, Overhead consol auto dimming override switch, BulletProof Fabricating Skid plate, 2lo module.
    You need a relay to feed the light bar. The switch will turn "on" the relay. You will need a 6ga. or larger to feed the Blue Sea fuse panel. I don't know what you mean by "wire harness". All wiring for this mod will be new.
     
  5. Jan 28, 2015 at 6:41 PM
    #5
    AfroWookie

    AfroWookie [OP] Active Member

    Joined:
    Feb 4, 2014
    Member:
    #122273
    Messages:
    34
    Gender:
    Male
    First Name:
    Ryan
    Portsmouth, VA
    Vehicle:
    09 Speedway Blue DC Sport
    This is the switch I bought

    http://www.amazon.com/gp/product/B00M5YC7Q4/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

    I've noticed a lot of people buy a wiring harness like this one when they install an LED light bar

    http://www.amazon.com/MICTUNING-Uni...qid=1422499237&sr=8-3&keywords=wiring+harness

    If I'm looking for constant power, is a relay really necessary?
     
  6. Jan 29, 2015 at 10:12 AM
    #6
    fergyz

    fergyz Mmmm...Tacos

    Joined:
    Apr 25, 2012
    Member:
    #77624
    Messages:
    735
    Gender:
    Male
    49th State
    Vehicle:
    06' DBC 4x4 6spd
  7. Jan 29, 2015 at 10:17 AM
    #7
    Large

    Large Red

    Joined:
    Sep 10, 2011
    Member:
    #63268
    Messages:
    22,433
    Gender:
    Male
    You don't need a wiring harness. You can just go buy some #12 AWG with some lugs and a crimper, and a relay if you desire.
     
  8. Jan 29, 2015 at 11:14 AM
    #8
    fergyz

    fergyz Mmmm...Tacos

    Joined:
    Apr 25, 2012
    Member:
    #77624
    Messages:
    735
    Gender:
    Male
    49th State
    Vehicle:
    06' DBC 4x4 6spd
    this is the way you can run it.... get a relay harness for the LED bar.

    run the harness to where it needs to go
    the relay should be close to the aux fuse block (if possible)
    mount the fuse block in a suitable location

    run 6 gauge fused power wire to the (+) aux fuse block
    run 6 gauge ground wire to the (-) aux fuse block

    pick 1 of the fused outputs and label it
    take the fuse out of the power wire to the relay harness. Pin 87 of relay
    place that fuse into the selected slot or wait until you have completed the rest of the wiring (Preferred & Safety) * make sure the fuse is the correct rating for the light bar.*

    cut off the fuse holder to the relay

    put a ring or spade terminal on the end of that wire and attach it to the fuse block selected slot

    run 2 wires through the firewall to the switch
    connect 1 wire to the "to light" terminal on the above picure
    connect the other end of that same wire to the relay for pin 86. this provides the power to activate the relay.

    connect the 2nd wire to the ground side of the switch.
    connect the other end of that same wire to the grounding block on the fuse block.
    *You can ground the switch in the cab and not use this wire*

    pick a switch 12volt source in the cab to power the lighted switch and active the relay
    run a fused wire from switch source to the "to battery" pin of the switch

    connect wires to switch
    wire the switch as seen in the picure

    connect the LED bar power wire to pin 30 on the relay
    connect the LED bar ground wire to a chassis ground or aux fuse box ground block

    connect relay pin 85 to ground

    reinstall fuse
    check for operations / flip the switch.

    Let there be light
     

Products Discussed in

To Top