Push-Pull with treble bleed mod

RehaAlev

Strat-Talk Member
Apr 29, 2019
12
Asia
Hi forum,

Looking for a wiring diagram for one humbucker (SD JB) and one volume push-pull pot for coil splitting. No tone pot. The issue is that I want to add a treble bleed cap that work for both, single coil and humbucker position.

thank you!
 
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Torvald

Senior Stratmaster
May 3, 2019
1,217
Northwest
I've used a Kinman style treble bleed with single coils and with humbuckers. Seems to work equally well with either. It's simply a 125k ohm resistor in series with a. 001uf capacitor between the 1st and 2nd lugs on the volume pot. Just Google Kinman treble bleed.
 

CB91710

No GAS shortage here
Double Platinum Supporting Member
Feb 24, 2019
10,344
SoCal
It's probably harder to wire the treble bleed so it only works with one and not the other.
The treble bleed goes between the wiper (output) and pot contact opposite the ground... where the pickup is connected.

The coil tap is a separate connection to the jumper that joins the coils and grounds it.

1H_1VppSPL.jpg
 

RehaAlev

Strat-Talk Member
Apr 29, 2019
12
Asia
Hi there.

I think I am almost there. It worked all fine, incl. the coil split, but I could adjust the volume. I realized that I forgot to ground the pot (see red arrow). Now that I have done that coil splitting does not work anymore, but can adjust the volume. Anyone can spot the problem?
 

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CB91710

No GAS shortage here
Double Platinum Supporting Member
Feb 24, 2019
10,344
SoCal
Everything looks fine, unless you overheated the switch contact carrier (it's just plastic) when soldering the ground to the case.
Does the switch still work if you check it with a meter? Should go from a few "k" (value of one coil) to short when actuated.
 

RehaAlev

Strat-Talk Member
Apr 29, 2019
12
Asia
I unfortunately don’t have a meter. I have been touching the pole pieces with a screw driver to see whether they are working. Before I grounded it to the case only one of the coils were working when I pulled out the pot, which is how it should be. Now both are working regardless of whether I pull or push the pot.

Edit: I tested it again and I can hear a drop in volume for the south coil when touching it with a screw driver. But it’s not fully off.
 
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