Is it possible to wire two pickups in series with two volume controls?

Yes, this is possible (in different ways).

To get you right ... Do you want ...
1.) Mudbucker and J both with independant volume control (like a Jazz Bass)?
2.) A Master volume, the Mudbucker is always 100% on (depending on Master) and the J can beblended to the Mudbucker - so the J can never be played alone?

In my wiring compendium are both solutions.
If your Mudbucker has only one ground and shielding, the J would have to be blended to HOT (and best would be a grounded copper foil under the J-PU).

First: What do you want? Method 1 or 2?

 

With TWO Mudbuckers you would indeed need a seperate grounding!
With one Mudbucker and a conventional J (two seperate wires) you don't need a seperate Mudbucker grounding!

I will make the drawing today - but it might need one or two hours. Have a look at your thread about 6 or 7 o'clock Scottish time. Then you have your pdf ...

It would be best to put a grounded copper foil under the J-PU because it will get HOT from both sides when it is out of work. This copper foil will at least ground the magnets.

I will draw "option 1" for you ...

 

Here is your wiring diagram ...
Control by "skilled diagram makers/readers" welcomed!!!

I put a tone control in ...
If you don't want a tone control, "HOT tip" goes directly to "middle J-pot" (where the yellow wire is). GND always to GND ...

ATTENTION! The housing of the J-PU volume pot is grounded but NONE of the lugs of this pot go to ground (as on normal parallel pots).

This is the same wiring as on 1976 Thunderbird basses.
Only difference is that I switched the neck and bridge PU, so that the mudbucker (and its housing) is always grounded.

Instead of copper foil under the J-PU other metallic foil might be used. If you don't put a foil under the pole pieces the PU would surely hum when you touch the magnets / pole pieces ...

 

What program was used to make that diagram?

 

That's kinda the idea! The smaller, thinner bridge pickup "de-muds" the mudbucker as it's brought up in parallel.

Series just adds more mud to the mudbucker.

 

Thanx maddle!

I have more than 10 years experiance with CorelDraw (3 to X3) ...

Also my 450 pages wiring compendium and many others (500 pages "Roland Amplifier Trilogy" with ALL Roland guitar, bass keyboard amps from 1972 - and ACE TONE before - until 2012). Available on the German Roland distributor www.bossmusik.de page (I'm not a Roland emloyee but only a fan).

All wiring diagrams are made 100% per hand (using self made pot, pickup, switch, wire +++ graphics) ...
No "plug and play" for the wiring ...

 

That diagram has been around for a while now. Walterw has posted it a few times.


I'm not sure if it's going to be a good idea to run a mudbucker in series with a J, because of the impedance differences, but then again, the effect in series is not as great as in parallel, so it could work fine. Let us know how functional it is, after you wire it up.

 

Yes, this is the "standard" wiring of a 1976 Thunderbird IV bass, converted to a Jazz Bass.

For people "who know what they do" it is no problem to change neck and bridge. A PU with a shielding at the neck makes it a bit complicated for newbies ...

For parallel wiring (like walterw suggested) a normal Jazz Bass diagram can be used (just too add his post) ...