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80 gs550 fuse problem???

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    #1

    80 gs550 fuse problem???

    Hey guys I have a 1980 gs550 that I have been working on bobbering. Anyways I bought an aftermarket tail/brake light and for some reason I keep blowing the "signal" fuse. I can wire it to always have a running light but the second I wire it for the brake light and grab the brake the signal fuse will blow. I cut all the blinkers off and taped all the wires front and rear,
    Could that have anything to do with no brake light and the blowing of the fuse?I'm pretty stumped here haha.
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    #2
    Originally posted by Wicked 550 View Post
    Hey guys I have a 1980 gs550 that I have been working on bobbering. Anyways I bought an aftermarket tail/brake light and for some reason I keep blowing the "signal" fuse. I can wire it to always have a running light but the second I wire it for the brake light and grab the brake the signal fuse will blow. I cut all the blinkers off and taped all the wires front and rear,
    Could that have anything to do with no brake light and the blowing of the fuse?I'm pretty stumped here haha.
    You must have a dead short some where in your brake light circuit.
    1984 GS1100GK newest addition to the heard
    80 GS 1000gt- most favorite ride love this bike
    1978 GS1000E- Known as "RoadKill" , Finished :D
    83 gs750ed- first new purchase
    85 EX500- vintage track weapon
    1958Ducati 98 Tourismo
    “Remember When in doubt use full throttle, It may not improve the situation ,but it will end the suspense ,
    If it isn't going to make it faster or safer it isn't worth doing

    Comment

      #3
      You say that the tail light is OK, but it blows when you apply the brake. Since it does not blow before you apply the brake, there is no reason so suspect your cut and taped signal wires. Apparently there is a direct short in the tail/brake light.

      Are you sure you have the wires connected correctly? Have you verified off the bike that the tail/brake light is working correctly? Not all aftermarket companies are kind enough to actually provide accurate documentation for their product, so please verify that it actually works, then install it on the bike. If it still blows a fuse, the problem is in the bike, not the light.

      .
      sigpic
      mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
      hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
      #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
      #2 son: 1980 GS1000G
      Family Portrait
      Siblings and Spouses
      Mom's first ride
      Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
      (Click on my username in the upper-left corner for e-mail info.)

      Comment

        #4
        Thanks guys if I find time today after work I'm going to go through the whole thing again. And Im sure that it's wired correctly. But I will test the light I didn't think that could be an issue at all until u mentioned that steve... I'll let u know how it goes.

        Comment

          #5
          Originally posted by Wicked 550 View Post
          ... I didn't think ...
          Sadly, that's the reason there are so many posts in the tech help section.

          You can't always trust the colors or the descriptions, especially if the product was produced "somewhat (significantly?) west of San Francisco".

          Connect a jumper wire from a battery to what you believe is a ground, then connect another jumper from the positive wire of the battery to each of the two wires to see what it does. When you have verified what wire does what, then you can connect it to the bike.

          Please let us know what you find.

          .
          sigpic
          mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
          hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
          #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
          #2 son: 1980 GS1000G
          Family Portrait
          Siblings and Spouses
          Mom's first ride
          Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
          (Click on my username in the upper-left corner for e-mail info.)

          Comment

            #6
            take the bulb out of the light and try it. I've actually seen bad bulbs and/or sockets that had a short , which blew fuses!

            Comment

              #7
              Originally posted by barnbiketom View Post
              take the bulb out of the light and try it. I've actually seen bad bulbs and/or sockets that had a short , which blew fuses!
              That would also show itself in the independant test that I suggested.

              With the light removed from the bike (at least electrically), you can do a whole BUNCH of testing without blowing any of the bike's fuses. Once you KNOW that the bike is working, connect the wires and try again. If you blow fuses now, you know it's not the light.

              .
              sigpic
              mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
              hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
              #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
              #2 son: 1980 GS1000G
              Family Portrait
              Siblings and Spouses
              Mom's first ride
              Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
              (Click on my username in the upper-left corner for e-mail info.)

              Comment

                #8
                Ok so I figured it out.... Steve u were right it was the light itself the whole time! The ground was broken off completely! So I re wired the whole thing and it works like a champ haha thanks for the help guys maybe next time I won't overlook the obvious and trust what comes through the mail.

                Comment

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