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Turn Signals

Discussion in 'Boss Plows Discussion' started by nrplowguy, Oct 16, 2008.

  1. nrplowguy

    nrplowguy Senior Member
    Messages: 130

    Question on a turn signal problem.....

    I have a 8' poly i hooked it up today and brought it out of storage when i checked the lights i had right turn but no left :realmad: . checked the wiring just to make sure nothing had happened to it all good. didn't have a chance to check anything else got to dark out to quick. what could it be. B&B :help: i know you are the man to talk to on subjects like this.........
     
  2. Makndust

    Makndust Senior Member
    Messages: 324

    Pull the lens off and check the bulb holder. Mine keeps rattling apart in the lens cover. It pisses me off, because about every other storm I have to pull the lenses apart and put the bulb holder back into place.
     
  3. nrplowguy

    nrplowguy Senior Member
    Messages: 130

    bulbs are good in their tight and put some dielectric on them too
     
  4. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    When you lose a single turn signal it's usually do to either a poor connection/tap in where ever the violet colored turn wire is connected into the truck wiring, or a broken/bent pin in the plow plug, it's not usually due to a blown bulb as the Boss turns have two bulbs per side so it's not likely you'll lose them both at the same time.

    It's quicker to verify you have power in the turn circuit rather than pulling the turn/parking light housing apart to check the bulbs so start with checking the plow plug to to be sure the pin for that turn isn't broken/bent/corroded. If it looks good then check the truck side plug half with a test light with the turn signal on to be sure you have power all the way to the plug. Pin #12 is the left turn one (see diagram, truck side view).

    I think you'll find it's one of these two issues. :waving:
     

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  5. nrplowguy

    nrplowguy Senior Member
    Messages: 130

    i checked input power from truck good checked the continuity from the plow side of plug to the light good. what else could it be. when i checked the continuity every wire in the turn sig assem. came back with a beep when only the violet should have beeped.???????
     
  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    You will have CONTINUITY on the wires because your only checking for continuity, and the wires will show continuity since they're connected together by the filaments in the light bulbs.

    Use an actual TEST LIGHT to check for power with the turn signal on.