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Thread: Turn signal fuse blows

  1. #1
    Join Date
    Aug 2014

    Turn signal fuse blows

    So I have my LS swap running, but I have a problem with the turn signal/back up light fuse. It works in key on position, but as soon as I turn the truck over to crank position to start it it blows the fuse. I have heard it can be multi-function switch ,but I would think it wouldn't work in key on position? I have looked for any shorts, but I have had no luck finding one under the dash or wiring up by the headlights.


  2. #2
    Join Date
    Aug 2011
    New Port Beach, CA.
    do you have a neutral safety switch from a newer truck in there i be leave they rest at ground to send signal to the bcm to alow the truck to crank. Maybe the older truck use a positive signal straight from the neutral switch. just a thought
    6.0 MAX Blown

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