1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Fried Electric System

Discussion in 'Technical Chat' started by thehtizzle@gmail.com, Sep 29, 2010.

  1. Sep 29, 2010 at 7:47 AM
    #1
    thehtizzle@gmail.com

    thehtizzle@gmail.com [OP] Well-Known Member

    Joined:
    Jun 20, 2008
    Member:
    #7426
    Messages:
    48
    Houston, TX
    Vehicle:
    06 Tacoma 4cyl Access Cab
    3" Redy Lift, radio upgrade, sub + amp, window visors
    I was taking out my subs of my 2005 Tacoma and was removing the power wire that ran to the sub in the backseat. Stupid me, I forgot to disconnect the power wire from the battery first. While pulling the power wire out through the door jam and through the floorboards/dashboard, it was a live wire and touched everything on the way out of the truck. When I went to start up my truck, nothing. Now all the lights have gone haywire and when I step on the brakes, the gauge lights all flash on and off. When I turn on the flashers they struggle to work and a noise comes from the fuse box. I checked the fuses and disconnected the battery hoping this would reset something, but no luck.

    What could have happened by pulling this live power wire out? What would have got fried by touching this live wire to the frame of the truck? Any suggestions?
     
  2. Sep 29, 2010 at 7:48 AM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,136
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    Check the fuses. You may have fried the ALT fuse...
     
  3. Sep 29, 2010 at 7:48 AM
    #3
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,732
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    Did you check both fuse boxes?
     
  4. Sep 29, 2010 at 8:28 AM
    #4
    BlueT

    BlueT Well-Known Member

    Joined:
    Mar 30, 2009
    Member:
    #15341
    Messages:
    5,645
    Gender:
    Male
    NorthEast
    Vehicle:
    07 Dbl Cab LB with LSD
    I moded 1999 Taco so much it had turned to Land Cruiser
    Where exactly that wire was connected? to battery itself? Directly to positive ?

    EDIT: Which fuse box is making noise? One in Engine bay or one under the dash? To answer the question anything could have burned down that got touched by wire.
    But if fuses check out next most likely victim is one of the relays (hence your noise in fuse box) relays usually are powered by small voltage, so touching them with 12 V full amp would definitely fried them.
     
  5. Sep 29, 2010 at 8:53 AM
    #5
    thehtizzle@gmail.com

    thehtizzle@gmail.com [OP] Well-Known Member

    Joined:
    Jun 20, 2008
    Member:
    #7426
    Messages:
    48
    Houston, TX
    Vehicle:
    06 Tacoma 4cyl Access Cab
    3" Redy Lift, radio upgrade, sub + amp, window visors
    The wire was connected directly to the battery. The fuse box that the noise is coming from is the one inside the truck in the dashboard. Is there anyway to visually check a relay to see if it is fried or can I check with a voltmeter?
     
  6. Sep 29, 2010 at 8:59 AM
    #6
    thehtizzle@gmail.com

    thehtizzle@gmail.com [OP] Well-Known Member

    Joined:
    Jun 20, 2008
    Member:
    #7426
    Messages:
    48
    Houston, TX
    Vehicle:
    06 Tacoma 4cyl Access Cab
    3" Redy Lift, radio upgrade, sub + amp, window visors
    I checked the ignition fuses when I thought that the truck just wouldn't start. Then I realized the problem was bigger than a fuse (I think) due to the blinking dash lights and won't start. But I think I will go back and check all the fuses just to be safe. What else besides fuses and relays do you think could have happened? I don't know squat about vehicle wiring.
     
  7. Sep 29, 2010 at 9:03 AM
    #7
    Trap

    Trap Well-Known Member

    Joined:
    May 26, 2010
    Member:
    #37878
    Messages:
    901
    Gender:
    Male
    Vehicle:
    Indego Ink TRD OR
    Electric Tail Gate Lock, EZ Down + Cable Mod, Galvanized Underbody, DK 9000, CloudRider SS Grill insert. BakFlip HD, Cabin Air Filter mod, Alarm, Zero Rust !
    Ya you can check them with a voltmeter but test across the coil on ohms to see if the coil is still good then you need to find some 12 volts. Power them up and check across the contacts. See if it's zero ohms.

    Actually where did the negative wire for that amp run? Cause if you shorted it out the negative run will be where the fault lies.

    Anyway pin 85 of the relay is negative pin 86 is positive when you power it up. Pin 30 and 87 is the contacts. When it's powered up it should be zero ohms across the contacts.

    Should have a measurable resistance across the coil.

    Chances are you goofed the battery right up. I can't really see how a short on a directly connected wire would screw up the wiring on the truck. Fuses relays or otherwise.
     
  8. Sep 29, 2010 at 9:10 AM
    #8
    BlueT

    BlueT Well-Known Member

    Joined:
    Mar 30, 2009
    Member:
    #15341
    Messages:
    5,645
    Gender:
    Male
    NorthEast
    Vehicle:
    07 Dbl Cab LB with LSD
    I moded 1999 Taco so much it had turned to Land Cruiser
    x2
    OP: You can try smelling them... :) to see if they smell as burned. I dont remember how many relays are there but I think its more then one. Your most likely culprit is main power one. So if AC is the same try swapping it.
    Still use voltemeter on all fuses because one could be partially burned and it is just reducing voltage.
     
  9. Sep 29, 2010 at 9:13 AM
    #9
    Trap

    Trap Well-Known Member

    Joined:
    May 26, 2010
    Member:
    #37878
    Messages:
    901
    Gender:
    Male
    Vehicle:
    Indego Ink TRD OR
    Electric Tail Gate Lock, EZ Down + Cable Mod, Galvanized Underbody, DK 9000, CloudRider SS Grill insert. BakFlip HD, Cabin Air Filter mod, Alarm, Zero Rust !
    Ya really you have to pull fuses out to test them right. Arcing could have goofed up wires near that run.

    Did you learn your lesson? Don't work on live shit. You had like a 1000 amps available on that run on a short if there was not a fuse.
     
  10. Sep 29, 2010 at 9:28 AM
    #10
    thehtizzle@gmail.com

    thehtizzle@gmail.com [OP] Well-Known Member

    Joined:
    Jun 20, 2008
    Member:
    #7426
    Messages:
    48
    Houston, TX
    Vehicle:
    06 Tacoma 4cyl Access Cab
    3" Redy Lift, radio upgrade, sub + amp, window visors
    I definately learned a lesson. It takes something stupid like this to really make yourself stop and think. I know better, but just wasn't thinking. Now it will hit me in the pocketbook and I will remember forever. Hoepfully this is something not too copmlex and won't need a trip to a repair shop b/c that is never cheap!
     
  11. Sep 29, 2010 at 9:38 AM
    #11
    JLink

    JLink Well-Known Member

    Joined:
    May 9, 2010
    Member:
    #36795
    Messages:
    11,333
    Gender:
    Male
    First Name:
    Josh
    Ocean, NJ
    Vehicle:
    The "Big Nig"
    Lifted, Locked, Armored. Ready To Wheel.
    That really sucks.. Just be glad that you didn't acidentally grab the live wire bare handed.. That work give u a pretty bad shock I'm sure
     
  12. Sep 29, 2010 at 11:50 AM
    #12
    IslandBoy71

    IslandBoy71 Well-Known Member

    Joined:
    Jul 25, 2009
    Member:
    #20177
    Messages:
    381
    Gender:
    Male
    First Name:
    Reggie
    Lakewood, CA
    Vehicle:
    06 TRD PreRunner Sport SR5 DC
    TRD Intake,TRD cat back exhaust, Billet front grill

    You should always run a fuse between the battery and the amp or powerd sub.
     
  13. Sep 29, 2010 at 11:59 AM
    #13
    thehtizzle@gmail.com

    thehtizzle@gmail.com [OP] Well-Known Member

    Joined:
    Jun 20, 2008
    Member:
    #7426
    Messages:
    48
    Houston, TX
    Vehicle:
    06 Tacoma 4cyl Access Cab
    3" Redy Lift, radio upgrade, sub + amp, window visors
    The wire had a fuse between the battery and the sub. That is why I am so surprised that everything else is fried. Maybe the fuse was too large to get tripped. I am not at home but Ill have to check that tonight. If the fuse would have done its job correctly, none of this would have happened.
     
  14. Sep 29, 2010 at 12:36 PM
    #14
    Trap

    Trap Well-Known Member

    Joined:
    May 26, 2010
    Member:
    #37878
    Messages:
    901
    Gender:
    Male
    Vehicle:
    Indego Ink TRD OR
    Electric Tail Gate Lock, EZ Down + Cable Mod, Galvanized Underbody, DK 9000, CloudRider SS Grill insert. BakFlip HD, Cabin Air Filter mod, Alarm, Zero Rust !
    Under the hood are big fuses, 90 amp sized ones, make sure you check them too.
     
  15. Sep 29, 2010 at 1:00 PM
    #15
    cinch

    cinch Member Extraordinaire

    Joined:
    Mar 30, 2010
    Member:
    #34254
    Messages:
    264
    Gender:
    Male
    First Name:
    Al
    Boulder Creek Ca
    Vehicle:
    2010 Prerunner double cab
    Hope you didn't cause a huge voltage spike that could have fried your computer or something.
     
  16. Sep 29, 2010 at 1:12 PM
    #16
    thehtizzle@gmail.com

    thehtizzle@gmail.com [OP] Well-Known Member

    Joined:
    Jun 20, 2008
    Member:
    #7426
    Messages:
    48
    Houston, TX
    Vehicle:
    06 Tacoma 4cyl Access Cab
    3" Redy Lift, radio upgrade, sub + amp, window visors
    Would there by any way to tell if the computer was fried either by the way the truck is acting or by visible inspection?
     
  17. Sep 29, 2010 at 1:25 PM
    #17
    IslandBoy71

    IslandBoy71 Well-Known Member

    Joined:
    Jul 25, 2009
    Member:
    #20177
    Messages:
    381
    Gender:
    Male
    First Name:
    Reggie
    Lakewood, CA
    Vehicle:
    06 TRD PreRunner Sport SR5 DC
    TRD Intake,TRD cat back exhaust, Billet front grill
    Is the truck still drivable? You might have to bite the bullet and take it to the dealer and have it diagnosed.
     
  18. Sep 29, 2010 at 1:28 PM
    #18
    thehtizzle@gmail.com

    thehtizzle@gmail.com [OP] Well-Known Member

    Joined:
    Jun 20, 2008
    Member:
    #7426
    Messages:
    48
    Houston, TX
    Vehicle:
    06 Tacoma 4cyl Access Cab
    3" Redy Lift, radio upgrade, sub + amp, window visors
    No, I can't get it to start. When I try to start the truck by turning the key, its like it loses all power, the dash guages go out. Then as soon as I turn the key back to the ACC key position, the lights come back on. Meanwhile, the battery has a full charge. Its like the truck is possessed.
     
  19. Sep 29, 2010 at 1:51 PM
    #19
    cinch

    cinch Member Extraordinaire

    Joined:
    Mar 30, 2010
    Member:
    #34254
    Messages:
    264
    Gender:
    Male
    First Name:
    Al
    Boulder Creek Ca
    Vehicle:
    2010 Prerunner double cab
    It's just possible you have a bad connection in either your positive battery cable (at either end) or your ground cable (at either end). This would still look like a good battery and would read 12 volts but as soon as you put a load on it it would bog down everything. Hence the dash lights going out when you put a load on the battery via the brake light switch. Same for bogging down the starter.
     
  20. Sep 29, 2010 at 2:03 PM
    #20
    Trap

    Trap Well-Known Member

    Joined:
    May 26, 2010
    Member:
    #37878
    Messages:
    901
    Gender:
    Male
    Vehicle:
    Indego Ink TRD OR
    Electric Tail Gate Lock, EZ Down + Cable Mod, Galvanized Underbody, DK 9000, CloudRider SS Grill insert. BakFlip HD, Cabin Air Filter mod, Alarm, Zero Rust !
    X2^ Personally I can't see how it would have screwed anything up. The short would have been between the wire he pulled out and the grounded truck. It should not of effected anything. The only way it could have is if he pulled a bunch of wires out and that one live shorted to other wires and not to frame.
     
To Top