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CB keeps blowing fuses. HELP!

Discussion in '2nd Gen. Tacomas (2005-2015)' started by CayucosTacoma, Jun 18, 2012.

  1. Jun 18, 2012 at 12:56 PM
    #1
    CayucosTacoma

    CayucosTacoma [OP] Just think outside the Yota

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    Dont know where to put this because there is no eletrical section
    So i picked up a uniden CB(same internals as a cobra 29) and I did this.
    http://www.tacomaworld.com/forum/audio-video/49635-cb-radio-cobra-29-mod-mount-center-console.html
    the cb i bought came with a cigarette lighter and i plugged into it after i finished and it worked. I then tried to hard wire it to the battery and i ,fixed up the positive and negative leads the first time and blew the fuse. I then replaced the fuse and double checked the leads and still kept blowing fuses. 5 fuses later and still blowing fuses. No shorts(triple checked that) and no clue what is wrong.
    Anyone help?
     
  2. Jun 18, 2012 at 1:02 PM
    #2
    Monkeyboy

    Monkeyboy Well-Known Member

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    If you are blowing a fuse, you have a short. Time to bust out the multimeter and track it down.

    What size fuse are you using ? And how did you wire it to the battery ?
     
  3. Jun 18, 2012 at 1:06 PM
    #3
    04LTtacoma

    04LTtacoma Well-Known Member

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    Possibly wrong size fuse?
     
  4. Jun 18, 2012 at 1:06 PM
    #4
    CayucosTacoma

    CayucosTacoma [OP] Just think outside the Yota

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    I thought so too so i pulled all the wire from the grommet in the fire wall and checked all the wiring for signs of scrapes holes etc, then went straight to the battery over my hood. Maybe inside the CB somewhere?
    and the fuse with the CB didnt say how big it was so i started with 15 then 20. Just two crimp connections straight to the battery. One on positive one on negative.

    And i guess if this helps the fuse blows immediately
     
  5. Jun 18, 2012 at 1:09 PM
    #5
    04LTtacoma

    04LTtacoma Well-Known Member

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    So your drawing power directly from the battery? Have you considered drawing power from a fuse inside the cab under your dash on the drivers side?
     
  6. Jun 18, 2012 at 1:11 PM
    #6
    CayucosTacoma

    CayucosTacoma [OP] Just think outside the Yota

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    I think i am going to try and reconnect from the ciggarette lighter and then if that works ill move onto a fuse in the cab. I just need to find one that is always hot
     
  7. Jun 18, 2012 at 1:13 PM
    #7
    04LTtacoma

    04LTtacoma Well-Known Member

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    I just helped a friend out install a CB radio in his 07 tacoma. We drew power from the fuse panel like this.
    http://www.google.com/imgres?q=fuse...w=166&start=0&ndsp=36&ved=1t:429,r:0,s:0,i:74

    EDIT:I used the horn fuse since it always had power going through it.
     
  8. Jun 18, 2012 at 1:14 PM
    #8
    CayucosTacoma

    CayucosTacoma [OP] Just think outside the Yota

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  9. Jun 18, 2012 at 1:18 PM
    #9
    CayucosTacoma

    CayucosTacoma [OP] Just think outside the Yota

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    anyone else before i run to autozone?
     
  10. Jun 18, 2012 at 1:32 PM
    #10
    Jimmyh

    Jimmyh Well-Known Member

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    An easy mistake is getting the two wires + - crossed. This will connect the wire from the positive battery directly to ground.
     
  11. Jun 18, 2012 at 1:38 PM
    #11
    LUSETACO

    LUSETACO Here for the Taco Pron

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    Yes
  12. Jun 18, 2012 at 2:38 PM
    #12
    CayucosTacoma

    CayucosTacoma [OP] Just think outside the Yota

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  13. Jun 18, 2012 at 5:32 PM
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    JKD

    JKD Well-Known Member

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    15 and 20 amp fuses are way oversized for a CB.
     
  14. Jun 18, 2012 at 5:42 PM
    #14
    Monkeyboy

    Monkeyboy Well-Known Member

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    On the plus side, if he uses a large enough fuse, he will find the short where the smoke is.
     
  15. Jun 18, 2012 at 6:19 PM
    #15
    CayucosTacoma

    CayucosTacoma [OP] Just think outside the Yota

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    yeah realized that went to 4 amps.
    UPDATE: so i went back and just hooked it to the original ciggarete lighter and now that is blowing fuses too
     
  16. Jun 18, 2012 at 6:55 PM
    #16
    Monkeyboy

    Monkeyboy Well-Known Member

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    I bet you accidentally reversed the wires earlier and blew the zener (polarity reversal) diode.

    If you know how to use a multimeter you can open the case yourself and see. Otherwise, you gotta take it to a CB shop.
     
  17. Jun 18, 2012 at 7:03 PM
    #17
    CayucosTacoma

    CayucosTacoma [OP] Just think outside the Yota

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    yeah i just looked and the diodes were split in half :mad:
    so anyone know where i can buy these? radio shack?
     
  18. Jun 18, 2012 at 7:20 PM
    #18
    CayucosTacoma

    CayucosTacoma [OP] Just think outside the Yota

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  19. Jun 21, 2012 at 1:57 PM
    #19
    CayucosTacoma

    CayucosTacoma [OP] Just think outside the Yota

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    hell yeah! so after messing with it i finally got it to work. was the polarity diode. This is why i love this website so much help!
     
  20. Jun 22, 2012 at 1:02 AM
    #20
    CayucosTacoma

    CayucosTacoma [OP] Just think outside the Yota

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