1. Please take 30 seconds to register your free account to remove most ads, post topics, make friends, earn reward points at our store, and more!  

I need some wiring help

Discussion in 'Pickups & Electronics [BG]' started by SwagAttack, Dec 29, 2011.


  1. SwagAttack

    SwagAttack

    Sep 14, 2011
    Bay Area, CA
    I have two humbuckers (mm style), which are going to their own north coil/parallel/south coil switch. I want to put both pickups to a series/parallel switch, but I am not sure how to wire that. It is passive with v/v/t, and so I also need to know when the outputs/grounds go to the volume pots.

    Basically, when the outputs come out of the 3 way switch, what comes next (goes to series/parallel switch or volume knob), and how do you wire the series/parallel switch for those? The pickups have 4 wires coming out of it, but it shouldn't matter since coming out of the 3 way switch, each only has one output and 2 grounds. The layout I used for the 3 way switch comes from the diagrams from http://www.talkbass.com/forum/f38/series-parallel-switch-mute-switch-835991/
     
  2. Start by picking your switching here:
    4044630163_661f69db30_o.

    Then use the "ground" connections as the black wires from the pickups in this diagram, and the "output" connections as the white wires.

    Wiring Diagram
     
  3. SwagAttack

    SwagAttack

    Sep 14, 2011
    Bay Area, CA
    Ok, so it is like a S-1 switch then. I had actually pm'd you since you were so helpful before.

    So, it would go humbucker -> 3 way -> series/parallel -> then to volume, etc? And then on the 3 way switch, the blue output has two connections in the middle of the switch. So I would just connect the top to the bottom, then the bottom to the 2 way switch? And the 2 grounds from the 3 way go to the same one on the 2 way?
     
  4. Just checked my inbox, sorry, I'm getting slow at responding to PMs lately.:(

    There's only one ground on the series/parallel switch. The pink connection from the neck pickup's switch will go to the pole of the series/parallel switch that connects the common to ground in parallel mode, however.
     
  5. SwagAttack

    SwagAttack

    Sep 14, 2011
    Bay Area, CA
    Ok, so I think I have drafted a full wiring diagram for the system. If you don't mind, would you take a look at it to make sure it is accurate? I will have to scan it tomorrow since I am away from one at the moment.
     
  6. Sure.
     
  7. SwagAttack

    SwagAttack

    Sep 14, 2011
    Bay Area, CA
    Ok, I was actually able to upload it. If you need any clarification on anything I drew, just ask.
     

    Attached Files:

  8. I'm not sure what you're doing with the volume pots.
    The bridge pickup's pot is backwards, and the wiper terminal should be it's input, and the neck pickup's pot sweeps the ground potential between the output and the pickup.

    Otherwise, the switching looks good, assuming the color code is correct for the pickups.
     
  9. SwagAttack

    SwagAttack

    Sep 14, 2011
    Bay Area, CA
    Ya I just put upside down for the ease of drawing it so it would look a little bit cleaner. I will change the terminals, I honestly didn't really think about that when I drew it.
     
  10. SwagAttack

    SwagAttack

    Sep 14, 2011
    Bay Area, CA
    Ok, well I finally received my guitar fetish mm pro pickups. But they are a little bit different than expected. It has 5 wires: black=ground, green=+, silver shield= ground, and then it has red and the white wires connected. It says, connect red to white, no contact for humbucker connect to ground for single coil. Does this mean I can not pick each coil individually? I might just have to do series/coil/par instead of nc/par/sc.
     
  11. SGD Lutherie

    SGD Lutherie Banned Commercial User

    Aug 21, 2008
    Bloomfield, NJ
    Owner, SGD Music Products
    If you connect red+white to hot you will switch out the other coil. So switch to ground for one, and hot for the other.
     
  12. SwagAttack

    SwagAttack

    Sep 14, 2011
    Bay Area, CA
    But is there no way to do it so I can make the toggle north coil/parallel/south coil? And if not, which solo coils would be best to have in the neck/bridge position?
     
  13. SGD Lutherie

    SGD Lutherie Banned Commercial User

    Aug 21, 2008
    Bloomfield, NJ
    Owner, SGD Music Products
    It's already wired in series, that's why the red and white are connected together.

    For parallel you would disconnect the red and white. From what I have read, GFS follows the Duncan color codes.

    Normally green is ground and black is hot. But you can do it either way. So, green and white would be hot, and red and black ground.

    Red and green is one coil, and black and white is the other.

    So you would need an on-on-on switch.

    Wire it like this:

    switch2.
     
  14. SwagAttack

    SwagAttack

    Sep 14, 2011
    Bay Area, CA
    The part that is tripping me up is the extra ground (silver shield). I expected just the 4 wires, and made my diagram based on that. But ya, GFS does use the same colors as SD.
     
  15. SGD Lutherie

    SGD Lutherie Banned Commercial User

    Aug 21, 2008
    Bloomfield, NJ
    Owner, SGD Music Products
    That's the "drain wire." Just connect that to ground. It's for the shield in the pickup, and is not part of the signal wires.

    All pickups with 4 conductor wiring have that drain wire.
     
  16. SwagAttack

    SwagAttack

    Sep 14, 2011
    Bay Area, CA
    O, ok that makes sense. Thanks for the help. Hopefully I can finish this tonight. Will post picks of the finished product if I can.

    Edit: Oops one more question. So the green wire goes to the left terminal, and then the blue goes from the left terminal to the right terminal. And then another wire from the right terminal goes to the output, so a total of three wires in those 2 terminals?
     
  17. SGD Lutherie

    SGD Lutherie Banned Commercial User

    Aug 21, 2008
    Bloomfield, NJ
    Owner, SGD Music Products
    Yes. I put a blue wire just to differentiate it from the pickup wires. It goes across the two center terminals and then to the hot. This works like a pickup selector switch, and treats the two coils in the pickup like two separate pickups. So you have one, both, or the other.
     
  18. SwagAttack

    SwagAttack

    Sep 14, 2011
    Bay Area, CA
    Also, on that on/on/on switch, the diagram line6 gave me showed the green one not going to the middle for the nc/par/sc. It only had two hots going to the switch instead of the green, red, and white.
     
  19. SGD Lutherie

    SGD Lutherie Banned Commercial User

    Aug 21, 2008
    Bloomfield, NJ
    Owner, SGD Music Products
    That was a brain fart. I fixed it:

    switch2.
     
  20. SwagAttack

    SwagAttack

    Sep 14, 2011
    Bay Area, CA
    Ok, and then for the blue that connects the two terminals, is it cool to use single strand wire, or is the current too high?
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.