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Reverse light wiring

Discussion in 'Truck & Equipment Repair' started by kc2006, Nov 19, 2008.

  1. kc2006

    kc2006 Senior Member
    Messages: 984

    Hey all, just wanted to post up a wiring quickie for anyone whos going to put reverse lights on their truck.

    I couldn't deside if i wanted just an on/off set up or a set up where the reverse spot lights would come on with the reverse lights. So i said hey I want both!

    So heres a simple way to wire it up incase anyone can't deside what they want or if you just don't know how, figured i'd help.

    Need a relay for one, and an on/off/on switch. Run your power and ground to the relay like normal, run the power from the relay to the lights like normal, now take your trigger wire and run it to the center post of the switch (the constant post, what would normally get power constantly). Then run a constant or ignitioned power wire to one of the side posts on the switch, and run a signal wire from your reverse harness to the other post.

    Basicly, you just run the switch backwards. So now when you flip it to one on, it turns the lights on, switch it off in the center, or switch it the other way so they only come on when your reverse lights are on.

    Hope that helps if anyone is interested in the info :waving:
  2. carl b

    carl b PlowSite.com Addict
    from Ohio
    Messages: 1,330

    thanks Kurt I've been thinking of running some just on- off but it looks like i may go this way
  3. kc2006

    kc2006 Senior Member
    Messages: 984

    heres a quickie diagram i drew. It's not great but shows it alittle better than just describing. The relay isn't drawn the way it should be wired, too tired and cold to think of the order of the wires.

    Last edited: Nov 19, 2008
  4. TubedYota

    TubedYota Member
    Messages: 45

    Very cool thanks :) I have to hook up some lights and i was wondering how to do it that way
  5. elite1msmith

    elite1msmith 2000 Club Member
    from chicago
    Messages: 2,762

    relay pins

    85- ground
    86- positive power from switch
    87 - positive power from battery
    30 - common - to light post

    87a , (only on 5 pin relays) would not be used in this case. 87a provides a conntection from it , to pin 30 .... while the relay is OFF.......... 87 provides a connection to pin 30 while the relay is ON
    Last edited: Nov 19, 2008
  6. Lux Lawn

    Lux Lawn PlowSite.com Addict
    Messages: 1,137

    Kurt,since you know how to do it now, take a ride down to my shop and hook up my truck.
  7. kc2006

    kc2006 Senior Member
    Messages: 984

    lol, i got 4 people that want me to do their trucks. its pretty easy, took me about an hour cus im picky about wiring, it has to be nice and neat.
  8. RichG53

    RichG53 PlowSite.com Addict
    Messages: 1,135

    So are you using a 3 or 4 post relay according to your diagram...????
  9. kc2006

    kc2006 Senior Member
    Messages: 984

    4 post. It's just a std relay you can get at any auto parts store for like fog lights or whatever.

    I mounted it under the hood because no one could get me a relay with a weathertight plug.
  10. DeereFarmer

    DeereFarmer PlowSite Veteran
    Messages: 3,296

    Don't forget to fuse the positive wire from the battery.
  11. c.schulz

    c.schulz Senior Member
    Messages: 202

    This is how I did mine with a light to remind me that I left them on. LOL