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%!&$-ing electrical problems

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by SnackPack, Oct 28, 2005.

  1. SnackPack

    SnackPack 1/2 ton status

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    So it seems my electrical problem came back. I went to start the engine and I didn't have any power on anything, except the headlights. I figured it was a problem with my ignition switch, so I got a new one. In the process of replacing it, I found that the red wires to it are at 12V, but the connections from it only read like 0.5V when on. Does that sound like a short to ground? How would I find that? I'm a multimeter novice, but I do have one.

    So my problem is not the ignition switch or the fusible links, but it is affecting everything that is key-operated. Any clues here?

    Adam :confused: :confused:
     
  2. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    Check the big plug going to the fuse block? The head lights are direct wired, IIRC. Time to pull out the schematics.
     
  3. dave_90_blazer

    dave_90_blazer 1/2 ton status

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    high resistance before the switch(corrosion, ect.)
     
  4. SnackPack

    SnackPack 1/2 ton status

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    high resistance between the fuse block and switch? What would qualify as "high" ?

    Adam
     
  5. SnackPack

    SnackPack 1/2 ton status

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    Electrial problems *FIXED*

    I think I got it.... unless it goes out again. Even though the fusible link at the starter tested good after I clipped it, I replaced it anyway. I also added a ground strap from the head to the firewall (there was one from the block to the firewall). I also added one from the head to the block, on the fuel pump block-off. So my ground runs from the battery to the head, to the block.

    I don't know if any one of these fixed the problem, so I'll just have to see if it happens again. Perhaps it was just the fact that I disconnect just about everything and made sure I put it all back together solid. I also put in star washers everywhere I could.

    Thanks for the input!

    Adam
     

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