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whelen strobe lights keep quiting.

Discussion in 'Truck & Equipment Repair' started by payton, Dec 10, 2005.

  1. payton

    payton Senior Member
    Messages: 470

    i installed a whelen strobe light kit less then 2 weeks ago. and over the past day or so they quit working from time to time.

    is the box over heating?

    i installed it just like the wiring diagram said.

    what i dont understand is how it will work for a while then quit. or it wont work from the get go but will start working a few mins later.

  2. LwnmwrMan22

    LwnmwrMan22 PlowSite Fanatic
    Messages: 28,366

    Is it a set that you put, say, in your turn signals??

    I had a set of sho-me's once, and the lights would do that.

    What I found that it was, was that the lights were getting moisture where they connected into the wiring harness.

    Try hardwiring the lights right together to the wiring harness, instead of plugging them in, or make sure they're not able to get moisture.
  3. payton

    payton Senior Member
    Messages: 470

    hmm moisture you say.. ill try and heat shrinking the conectors. maybe that might help.

  4. SnowGuy73

    SnowGuy73 PlowSite Fanatic
    Messages: 24,870

    I have a kit that is doing the same thing, the plugs are loaded with dielectric grease, and taped with electrical tape. So I don't think moisture is getting in there. I have heard that, that is the cause of it working sometimes and not working other times. I'm told that if your power supply was to over heat and "fry" it would stop working and stay "dead". :yow!:
  5. payton

    payton Senior Member
    Messages: 470

    ok so what is the proper way to fix this ?

  6. SnowGuy73

    SnowGuy73 PlowSite Fanatic
    Messages: 24,870

    No idea, I suppose you could hard wire then in, or use the water proof plugs. The thing that is odd, is that you never see police cars or ambulances having problems and they use the normal factory, white plugs. At least around here they do Im not sure about in other parts of the country.
  7. pbeering

    pbeering Senior Member
    Messages: 266

    You have a ground fault somewhere. Everyone has trouble with this stuff. Spray all the connections with fluid film and run the cables to be sure there are no chafed spots.
  8. J & B Lawncare

    J & B Lawncare Member
    Messages: 88

    Where is the power supply located at?

    Where did you mount the strobe pack? Is it grounded to the truck body?

    J & B Lawncare
  9. SnowGuy73

    SnowGuy73 PlowSite Fanatic
    Messages: 24,870

    Mine is mounted under the rear seat, and its grounded to the battery.
  10. payton

    payton Senior Member
    Messages: 470

    mounted under rear seat on drivers side. mounted to battery.

  11. harley hauler

    harley hauler Senior Member
    Messages: 214

    just had the same problem it's not the location of the box or the way you wired it. mine would work fine out in a storm while the streets where snow covered but as soon as the salt would do it's job and the street's would get wet the would act up and shut down, to verify that I tried running them on a rainy day and guess what nothing. So I pulled my rear taillight and found that the wires in side the connectors where starting to corrode so I re-did all the connectors and silicon-ed the tops where the wires when in and shrink wrap the since then I have'nt had a problem, and we just got nailed with a foot 18hrs of running them with no problems
  12. infineon954

    infineon954 Senior Member
    Messages: 251

    Interesting you guys have the same problem I'm having. One minute they work and the next they don't. When they are not working, I can hear the power supply clicking. Checked for loose connections, ground, and all fuses. I still can't find the problem. Of course I haven't had much time to really investigate the problem. Let me know what you guys come up with. I'm not sure about WHELEN. I have a SHO-ME 60w X 6 outlet system.
  13. SnowGuy73

    SnowGuy73 PlowSite Fanatic
    Messages: 24,870

    Yup, I had a I had a Sho-Me 4/60 kit in my other truck and never had a problem with that one. :dizzy:
  14. bnewell

    bnewell Banned
    from Ohio
    Messages: 91

    What Whelen system are you using??

  15. payton

    payton Senior Member
    Messages: 470

    Whelen 90 Watt 6 Outlet Strobe Kit with 4 Bulbs

  16. THE BOSS 1975

    THE BOSS 1975 Senior Member
    Messages: 120

    same problem today.. turned out to be a bad connector at the power supply
  17. rcpd34

    rcpd34 Senior Member
    from MD
    Messages: 688

    If the plug is getting wet and shorting out it may make a snapping or popping noise. Wait for it to dry and unplug it. Disconnect power to the power supply. Then wait 15 mis for the capacitors to discharge other wise it may straighten your hair. :realmad: Get a tube of aquarium sealant from your local pet store and put it in/on the backof the connectors where the wires go in. Other wise, check your ground. The unit should be mounted to a metal surface, or at least the mounting screws should be going into a metal surface. Sometimes the black wire is not enough. Finally, if it's been running a while & quits, touch the box. If it's hot to the touch, it may need to be serviced. Did you buy it new? From who? Give them or the mfg a call. We do dozens of these and have very few problems. Good luck.
  18. payton

    payton Senior Member
    Messages: 470

    my unit was brand new when i bought it. ill try the selant.

  19. scottL

    scottL PlowSite.com Addict
    Messages: 1,613

    All strobes have the same shut down circuit for safety. Dry all the connectors and splices. Make sure they are sealed tight where you cut them into your marker lenses. Then use silicone to cover anywhere an arc can happen. I have found the 'weather' proof connectors allow for an arc when moisture gets in them. Silcone everything!