Need Wiring Help for Jackson/Charvel Bass

Discussion in 'Pickups & Electronics [BG]' started by Treweek, Oct 28, 2019.

  1. Treweek

    Treweek

    Oct 28, 2019
    I've been asked to reassemble a 90's Jackson Custom Concert Bass (Active P-J bass with switch). This seems very similar to the Charvel B3. It appears to have been a VVT with a switch (pickup selector?) Everything is completely disconnected and there are at least a few parts missing. I could really use some help figuring out how it's supposed to be wired up, since I have found nothing online and contacting Jackson wasn't helpful.

    Can anyone help me out with either:
    A) A wiring diagram
    or
    B) A few pictures inside the cavity of a bass with the same VVT with switch layout

    Thanks in advance!

    (This picture is not the bass I'm talking about, but it has the same control layout, which actually seems to be somewhat rare)
    View attachment 3577552
     
  2. lz4005

    lz4005

    Oct 22, 2013
    An active bass most likely would be volume/bass/treble/switch, not VVT.
     
    lifer_ likes this.
  3. lifer_

    lifer_

    Oct 19, 2011
    Bulgaria
    This is the circuit that suppose to be there. This is an active preamp with treble, bass, plus a vol control and a 3 way switch. The preamp is JE-2000.Sadly I didn't manege to make my preamp to work. It was not functional. In ebay you can find an exact replica of this preamp or just replace it with something else. Now my bass is wired passive, with some Seymour Duncan pickups, but the original passive pickups are really good and I'm on dilemma to put them back in :) My bass is Charvel 850XL
    2j4a3p3.jpg p7yv4.jpg IMG_5504.JPG

    Edit: Main is wired Vol/Vol/Tone/3-way switch to fill the hole :), like Explorer guitar.
     
  4. Treweek

    Treweek

    Oct 28, 2019

    Thank you!!!!
     
    lifer_ likes this.
  5. Treweek

    Treweek

    Oct 28, 2019
    BTW... what does the 3-way switch do?
     
  6. lifer_

    lifer_

    Oct 19, 2011
    Bulgaria
    Selecting the pickups. P or P/J, or just J. The thing is that there are two volumes to do the same thing. But I left the switch to select the combination I want on the fly. Search google for wiring an Explorer and you will find the schematic. The downside is that if you turn the one volume all the way down it acts like a master volume and mutes the signal. But this is the way it is.
     
    Last edited: Oct 28, 2019
  7. lifer_

    lifer_

    Oct 19, 2011
    Bulgaria
    The TB member line6man draw this some years ago for a similar thread 4115652797_6076c6fa55_o.png
     
  8. Treweek

    Treweek

    Oct 28, 2019
    Ok. I'm probably going to end up getting the JE-2000 and wiring it back up to original.
     
    lifer_ likes this.