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

Strobes keep blowing?

Discussion in 'Ford Trucks' started by tbone3, Jan 20, 2012.

  1. tbone3

    tbone3 Member
    Messages: 86

    I put strobes on top of the rock gaurd on my dump truck and ever since i put them in they keep blowing fuses when i turn them on. I put them on their own circuit and each time i turn on the front ones they blow almost immediately. The rear one are fine its just the front ones. I check for shorts and theyre are none. I do not know where to look next


    Tom
     
  2. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,960

    can you unplug the strobe lights, and turn it on and see if the fuse blowes?? can you unplug one of the cables for one side and see if it still blows the fuse??
     
  3. BossPlow2010

    BossPlow2010 PlowSite.com Addict
    Messages: 1,032

    What strobes are you running?
     
  4. tbone3

    tbone3 Member
    Messages: 86

    I am running STRB-4W series Vehicle Strobe Light "got that off the site" heres the link. 4th one down.
    http://www.superbrightleds.com/cgi-...e&Page2Disp=/emergency-vehicle-led-lights.htm

    I am using a 15 amp switch to turn the front two on, and another 15 amp switch to turn the rears on. Only the front ones seem to blow the fuse and are having the most issue. Also when i have the rear strobes on and i switch the front on the Amp meter on my truck goes all the way down to 8 of a second and it goes back up. When it goes down to eight my head lights dim and everything in the truck seems to slow down.. Its really weird when it happens.

    Thanks guys.
    Tom
     
  5. BossPlow2010

    BossPlow2010 PlowSite.com Addict
    Messages: 1,032

    There's your problem!
    When your truck goes down to in amps, they will shut off because there's not enough power going to them. Take a volt meter and check your batterys amps. Maybe your alt is bad or maybe just a bad battery.

    You have two bateries right?
     
  6. tbone3

    tbone3 Member
    Messages: 86

    Yes! Two batteries. Just bought them about 3 months ago, they're interstate batteries the heavy duty snow plowing ones. I had a guy check my alt and at the time it was fine. But they keep on blowing. But when he checked them the lights where working fine. So once they blow should i check it?


    Tom
     
  7. 54powerwagon

    54powerwagon Senior Member
    Messages: 105

    you have a short in the line. the led's don't draw enough power to cause your lights to dim. you have a bare wire or you have power to ground.
     
  8. tbone3

    tbone3 Member
    Messages: 86

    Ill check them once again. How will i know if i have power to a ground?



    Tom
     
  9. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,960

    can you take one of the 2 fronts outta the circuit??/ like the left of right?? then turn on the switch and see what happens.
    leds draw like no power,,so theres a short to gnd somewhere
     
  10. 54powerwagon

    54powerwagon Senior Member
    Messages: 105

    check your connections see if you switched one light power to ground . or disconnect and check your power wire for a short to ground