1. Welcome to PlowSite. Notice a fresh look and new features? It’s now easier to share photos and videos, find popular topics fast, and enjoy expanded user profiles. If you have any questions, click HELP at the top or bottom of any page, or send an email to help@plowsite.com. We welcome your feedback.

    Dismiss Notice

Back up light issue

Discussion in 'Ford Trucks' started by grnstripes, Feb 28, 2015.

  1. grnstripes

    grnstripes Senior Member
    Messages: 236

    I recently installed new backup lights on my 2014 f250
    I added led spots to the stock backups
    Now when the truck is not running the backup lights work fine
    I start the truck and they stop working
    I put a bigger fuse in and nothing so I pulled out the relay and put it back in they worked fine then this morning same thing again nothing while running fine while just ignition is on and truck is not running
    Any advice pease
     
  2. 1olddogtwo

    1olddogtwo PlowSite Fanatic
    Messages: 11,513

    Explain the spot LED's. Where you mount them and how you powered them?
     
  3. grnstripes

    grnstripes Senior Member
    Messages: 236

    Mounted on the bumper and taped into the backup
    Light wires
     
  4. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,958

    So when this is happening, are your factory lights going off as well?
    Where did you ground them? Tapped into them as in how?
     
  5. grnstripes

    grnstripes Senior Member
    Messages: 236

    Nothing goes off on dash
    They are positive ground both too truck backup light wires
     
  6. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,958

    Your factory reverse lights, do they go off as well or do they stay on?
    You have hooked up to the proper wires?
    Leds can be directional, i.e. pos and negative need to go in the proper location.
     
  7. grnstripes

    grnstripes Senior Member
    Messages: 236

    They go out as well but all come on if the truck is not running
     
  8. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,958

    Ok I'm lost. The factory reverse lights go off like there supposed to?
     
  9. On a Call

    On a Call Senior Member
    Messages: 760

    My guess , and it is a guess is that when the truck is not running the circuit is not being regulated through a computer. When you start it up it is.

    The extra drain is telling the computer there is a extra drain = short, shut it down ? Just a thought.

    Might just have to run a separate line ?
     
  10. On a Call

    On a Call Senior Member
    Messages: 760

    That...or because it is a Ford ;)
     
  11. grnstripes

    grnstripes Senior Member
    Messages: 236

    Both the factory backup and led aftermarket go out
    And come on together if one set isn't working they all don't work when they do come on they all come on

    I have the positive hooked to the blue wire by the light bulb in the tail light assembly and the negative hooked to the black wire in the same spot
    They all work if the truck is not running when the truck is running they go out right after the come in fr a split second
    Last night when I pulled the relay and put it back in they worked normal the rest of the night around the dooryard
    This morning I'm back to not working while the truck is running but if I shut the truck off and leave the key in accessory position they all work as advertised
     
  12. On a Call

    On a Call Senior Member
    Messages: 760

    Switch your relays around ? Easy enough to do
     
  13. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,958

    I'd be leaning towards the computer idea as mentioned. Or the relay. Switching it out might be the quickest.
     
  14. grnstripes

    grnstripes Senior Member
    Messages: 236

    Any ideas which one to switch it with
    I went to autozone to get a bigger one
    Mine as well of gone to Olive Garden
     
  15. Too Stroked

    Too Stroked Senior Member
    Messages: 555

    Try this. Pull the factory backup bulbs both out, then re-try the truck. I'll bet everything goes back to normal. The Lighting Control Module does not like to see very much additional load on the circuit and if it does, it does some wonky things. If you need both your factory and new LED backup lamps, replace the regular (921 I think) backup bulbs with LED bulbs and I'll bet you'll be fine. I just went through all of this on a 2015 F-350 and that's where we ended up.
     
  16. Too Stroked

    Too Stroked Senior Member
    Messages: 555

  17. On a Call

    On a Call Senior Member
    Messages: 760

  18. grnstripes

    grnstripes Senior Member
    Messages: 236

    Thanks for the advice I will try that when I get home
    I find it funny mine had a backup alarm too that I disconnected thought that would make up for some of that voltage
     
  19. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,638

    First off it is never a good idea to use a larger fuse than what is recommended. The fuse is there to protect the wiring, installing a larger fuse could allow wiring to melt and short out.

    Second I suggest tapping into the reverse circuit for the trailer.
     
  20. grnstripes

    grnstripes Senior Member
    Messages: 236

    Changed my stock lights to LEDs as well everything
    Seems to be working a lot better now
    Also changed the style wire connectors I had on there as well just incase