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

how many lights off one wire harness?

Discussion in 'Lighting' started by kinkrider101, Jan 26, 2011.

  1. Jan 26, 2011 at 7:33 AM
    #1
    kinkrider101

    kinkrider101 [OP] Well-Known Member

    Joined:
    Sep 29, 2009
    Member:
    #23497
    Messages:
    2,698
    Gender:
    Male
    santa barbara
    Vehicle:
    2007 cummins/2007 tacoma
    wheels and tires
    So I have my reverse lights all wired in the back off my truck, could I add 2 more lights to the same harness, so it would be 4 lights and one switch?
     
  2. Jan 26, 2011 at 5:15 PM
    #2
    scollins

    scollins Well-Known Member

    Joined:
    Dec 23, 2010
    Member:
    #48145
    Messages:
    168
    Gender:
    Male
    First Name:
    Scott
    Renton WA
    Vehicle:
    2011 Tacoma Double Cab 4x4 T|X PRO
    One switch should be fine, but my instructions for my VisionX lights say no more than 2 lights per relay. So I would run 2 relays for 4 lights, and have both relays controlled by one switch. Probably means not using your same harness for a majority of the install....
     
  3. Jan 26, 2011 at 6:35 PM
    #3
    kinkrider101

    kinkrider101 [OP] Well-Known Member

    Joined:
    Sep 29, 2009
    Member:
    #23497
    Messages:
    2,698
    Gender:
    Male
    santa barbara
    Vehicle:
    2007 cummins/2007 tacoma
    wheels and tires
    I have no experience with relays, I have 4 offroad lights and none have relays
     
  4. Jan 26, 2011 at 9:53 PM
    #4
    scollins

    scollins Well-Known Member

    Joined:
    Dec 23, 2010
    Member:
    #48145
    Messages:
    168
    Gender:
    Male
    First Name:
    Scott
    Renton WA
    Vehicle:
    2011 Tacoma Double Cab 4x4 T|X PRO
    Ah, I see. Well, as long as you wire the lights properly (parallel), and the gauge of the wire and the switch is sufficient to handle the current, I don't think it should be a problem.

    What wattage are your lights? If I assume 35w each, you are running just shy of 3 amps at each light. With 4 lights in the circuit, you are looking at 12 amps through the wires and switch. Probably should be 10 gauge at a minimum, but as the length of the run increases, so should the gauge. If there lights at at the back, I'd probably want 8 gauge wires at least....


    But I didn't stay at a Holiday Inn last night, so value my advice at what you paid for it..... ;)
     
To Top