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allen8106's avatar
allen8106
Explorer
Nov 26, 2016

12 volt light issue

In preparation for my solar installation I've pulled a back panel out of my basement and pulled the 120v panel and the 12v panel out to review how things are hooked up. I've unhooked nothing in either of these two panels. My issue is the two 12v lights in the basement. I cut the wires to these lights in order to remove the panel they were attached to. Smart guy like me decided to crimp quick connect terminals on in case I ever had to remove the panel again. Now the lights don't work. I've removed the crimped terminals and wired direct with wire nuts and nothing. I've validated that the lights work by hooking them direct to a 12v motorcycle battery, they work fine this way. I've validated voltage at the camper wires that hook to the lights at 11.95 volts. The motorcycle battery I hooked them to was at 9.95 and light the lights fine. However, for some reason the lights will not come on when hooked back up to the original camper wires.

Suggestions?

9 Replies

  • wnjj's avatar
    wnjj
    Explorer II
    Were the lights on when you cut the wires? I assume they are on a switch. Not sure how you could blow a fuse if they were off.

    Make sure your connections are all good in case the fuse blew do to something in he new connectors or it may blow again, when you are camping in the rain and dark and really need them. :)
  • Doesn't "that" happen to all handymen at least once in their life? A rite of passage perhaps.
  • MrWizard wrote:
    Sounds to me like you cut the wires , with out disconnecting the fuse
    You blew the fuse
    When you read the voltage, you are reading a phantom voltage, there is not enough connection inside the fuse to carry the actual current to the lamp
    Go replace the fuse and see if they will come on


    I think you nailed it. I hooked up an old trailer light I have in my electrical surplus and it didn`t work either went inside and one of the 12v circuits was showing a red fault light. Replaced the burnt 15 amp fuse and all is well now.
  • One thing for sure, if you are in this kind of trouble before you even get started, leave, and stay far away from it,...let someone else do it !! :)
  • Sounds to me like you cut the wires , with out disconnecting the fuse
    You blew the fuse
    When you read the voltage, you are reading a phantom voltage, there is not enough connection inside the fuse to carry the actual current to the lamp
    Go replace the fuse and see if they will come on
  • It sounds like you've done everything but out a meter on it. Why not?
  • Allen

    By any chance that when you cut the wires,
    did you cut both wires at the same time?

    You could have tripped a GFI some where?
    Don't ask how I know!!!!!!

    As learned from my electrician, ONLY cut 1 wire at a time.......

    Tia,
    Don

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