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Help w/ p bass wiring

Discussion in 'Pickups & Electronics [BG]' started by brushfirewolf, Jun 29, 2020 at 8:16 PM.


  1. brushfirewolf

    brushfirewolf

    Nov 12, 2016
    Maryland
    Noob question here— this is a loaded pickguard from a mim p bass. There’s a third wire attached to the volume pot just dangling free. Where does this need to be soldered to? 88D8B784-9A82-4129-A544-2C27F083C13A.jpeg
     
  2. Reedt2000

    Reedt2000 Supporting Member

    Apr 26, 2017
    Central New Jersey
    Looks to be the bridge ground, should run through a little hole in the side of the cavity and end up under the bridge. The end should be stripped out and get pinned down by the pressure of the bridge being screwed on.
     
  3. brushfirewolf

    brushfirewolf

    Nov 12, 2016
    Maryland
    its no where near long enough to make it. There is also the really long black wire from the output jack which I assumed was the bridge ground..
     
    EatS1stBassist and nilorius like this.
  4. Reedt2000

    Reedt2000 Supporting Member

    Apr 26, 2017
    Central New Jersey
    Could be, ground is ground no matter where you pick it up. Might have been to ground shielding in a control cavity. Also could be that someone cut it instead of loosening the bridge on whatever bass it came from. If it serves no purpose you can remove it, or just insulate the end (i.e. tape it up ;))
     
    1960jbass likes this.
  5. brushfirewolf

    brushfirewolf

    Nov 12, 2016
    Maryland
    Ah ok. So ignoring it, the rest of the wiring looks right?
     
    Reedt2000 likes this.
  6. Reedt2000

    Reedt2000 Supporting Member

    Apr 26, 2017
    Central New Jersey
    Pretty much. Stick a cable in the jack, should be able to tap the pickups, work the volume and tone. If it all works screw it in, use the long wire to ground the bridge.
     
    brushfirewolf likes this.
  7. brushfirewolf

    brushfirewolf

    Nov 12, 2016
    Maryland
    Thanks!
     
    Reedt2000 likes this.
  8. iiipopes

    iiipopes Supporting Member

    May 4, 2009
    You will still need a bridge ground. The wire looks clipped, which leads me to believe it is a cavity ground that had the lug clipped off. If installed correctly with the bridge ground, and everything else works well, I would instead clip the extra wire at the pot body so there is nothing to attract extraneous noise. Loose wires act as antennae for electrostatic noise.
     
  9. brushfirewolf

    brushfirewolf

    Nov 12, 2016
    Maryland
    Yep used the long wire to run under the bridge. Good advice. I’ll have to see. Right now I have it all installed in the body. Still waiting for some parts to arrive before I can attach the neck and string it up, etc.

    I did plug it in and tap the pole pieces and it’s working. Don’t hear any extra noise
     
    iiipopes likes this.
  10. HardNHeavy

    HardNHeavy

    Apr 17, 2014
    PA
    surprised there no capacitor in that setup.....

    p-bass-wiring-diagram-p-bass-wiring-midlugtone-cap-jpg.jpg
     
  11. brushfirewolf

    brushfirewolf

    Nov 12, 2016
    Maryland
    I believe there is. You can see it on the side of the tone pot.
     
  12. Some Squiers have a ground strap in the control cavity.
     
  13. EatS1stBassist

    EatS1stBassist

    Apr 15, 2016
    So cal
    It’s a bridge hound.
     
    Reedt2000 likes this.
  14. HardNHeavy

    HardNHeavy

    Apr 17, 2014
    PA

    ahh your right...it was hiding, my bad:cool:
     
    EatS1stBassist likes this.
  15. Reedt2000

    Reedt2000 Supporting Member

    Apr 26, 2017
    Central New Jersey
    You're a bridge hound! :roflmao:
     
    EatS1stBassist and brushfirewolf like this.
  16. FrenchBassQC

    FrenchBassQC Supporting Member

    Jul 13, 2011
    Gatineau QC CA
    A bridge hound... OIP.SM_3EIG8u7np5NaWiyjo2gHaJ4?w=117&h=180&c=7&o=5&pid=1.jpg
     
    Trabeen, digmeout, 1960jbass and 6 others like this.
  17. brushfirewolf

    brushfirewolf

    Nov 12, 2016
    Maryland
    Sorry for the bad picture but the bridge ground is coming from the input jack (you can see it on the edge of the pic)

    The bigger pots barely slid into the tight route of the old squier body but it fit. Only problem now is the pickups are sitting super low. Only about 3mm above the body of the guitar. I even added some foam under the stock foam to raise them up but the screws aren’t long enough. Might have to glue a piece of wood in there to mount them on top of.
     
    Last edited: Jun 30, 2020 at 12:48 PM
  18. 40Hz

    40Hz Supporting Member

    @brushfirewolf - Look inside the control cavity and see if there is a loop or screw someplace. Most modern PBs have a ground wire going to the bridge and another attached to the shielding in the control cavity. And although it’s not a universal rule, convention is that black wires are always ground leads.
     
  19. EatS1stBassist

    EatS1stBassist

    Apr 15, 2016
    So cal
    Reedt2000 likes this.
  20. brushfirewolf

    brushfirewolf

    Nov 12, 2016
    Maryland
    This is an old squier p bass body from the 90s. There's no shielding- empty control cavity. Right now it's just tucked down in between the pots. I'll see if this causes any unwanted noise when I get the neck and strings on later tonight.
     
    EatS1stBassist likes this.

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