please help with custom wiring diagram

[RavensNest]

Hello to everyone and thanks in advance!

I have a tb-4 and a sh-2n and i want to coil split them on my jazzmaster. i want to wire them but I'm not sure if my plan is correct or faulty. If anyone could, please help me!

here's what im looking to do.

two-humbucker, 1 volume, 1 tone, 1 jack and a three way toggle (when up neck only, middle both, down bridge only). + on the top, i have a two way kill switch with another set of volume and tone.

here is the tricky part, i want the kill switch to be the switch for coil splitting. so when its on, it turns both humbuckers to single coil... with the three way toggle as functional as it is with it off. (so 3 way toggle: up, neck single coil; middle, both; down, bridge single coil). the second set of volume and tone, i want to control when the pickups are in single coil mode.

also i have a .022 cap for the humbucker or do i need two? and a .047 for the single.

here are my inventory for my project so far
-tb-4
-sh-2n
-3 way toggle
-2x 500k pot for master volume and tone
-audio jack
-.022 cap

-jazzmaster two way switch
-2x 250k mini pots for single coil volume and tone
-.047 cap

am i missing anything?

could someone please help me with my plan?

thank you so much!

 

[BriGuy1968]

please help with custom wiring diagram

Hmmm... interesting idea, but I'm curious... Why do you want to have a separate volume and tone for splits vs humbuckers?

I'm sure there's a way to make your idea work, but you may need different components. How many poles does the Jazzmaster 2-way switch have?

Oh yeah... and welcome to the forum!


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[BriGuy1968]

please help with custom wiring diagram

Silly me! I've never actually looked that closely at a Jazzmaster setup until a few minutes ago, and I think I now understand what you're probably going for. I'll see what I can come up with.


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[BriGuy1968]

Re: please help with custom wiring diagram

Also, the way your post reads, it sounds like you're planning to replace the existing sliding pots (upper volume and tone) with standard 250k pots that turn... is that correct?


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[BriGuy1968]

please help with custom wiring diagram

Okay... here you go. I split the coils North for the bridge and South for the neck so it would be hum-canceling in the center toggle position when split. If you're actually planning on using the roller style pots for the upper bout, the wiring will be the same concept. I drew the grounds in such a way that they're easy to follow on the diagram, but you can move a couple around as long as they're all connected without any loops.

I hope your project goes well!

 

[RavensNest]

Re: please help with custom wiring diagram

Omg! Thank you so much!!! So awesome! I will definitely let you know when I'm done! I'm just waiting for the pickguard to come. . Also The jazzmaster dpdt has 6 legs I believe. Thank you again!

 

[Teleplayer]

Re: please help with custom wiring diagram

I have some comment about the diagram posted above. It seems that both tone controls are always active. Also there is increased loading on the output signal due to the use of two volume controls.

Its not too hard to resolve these issues. It just means connecting the output socket via the unused pole on the slider switch.

 

[BriGuy1968]

Re: please help with custom wiring diagram

Omg! Thank you so much!!! So awesome! I will definitely let you know when I'm done! I'm just waiting for the pickguard to come. . Also The jazzmaster dpdt has 6 legs I believe. Thank you again!

No problem... Glad to help! I forgot to mention, though, that the slider you have right now will NOT allow it to happen... you have to pick up a 2-way 4PDT slider switch like this one in order to make things happen. The normal DPDT switch won't can't do the split and the movement to the upper bout controls at the same time.

http://store.generalguitargadgets.com/index.php/slider-switch-4pdt.html


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[BriGuy1968]

Re: please help with custom wiring diagram

I have some comment about the diagram posted above. It seems that both tone controls are always active. Also there is increased loading on the output signal due to the use of two volume controls.

Its not too hard to resolve these issues. It just means connecting the output socket via the unused pole on the slider switch.

Take a second look. The signals from the pickups travel to the 3-way toggle and then on to the 4PDT slider where it can only go to the upper OR to the lower bout controls... it never uses both at the same time, so the two tone controls are NOT active at the same time, and there is no "increased loading" on the output signal.


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[Teleplayer]

Re: please help with custom wiring diagram

Take a second look. The signals from the pickups travel to the 3-way toggle and then on to the 4PDT slider where it can only go to the upper OR to the lower bout controls... it never uses both at the same time, so the two tone controls are NOT active at the same time, and there is no "increased loading" on the output signal.

I still think there may be an issue with the loading connected to the output jack. I am looking at the connection highlighted in orange below.

 

[BriGuy1968]

Re: please help with custom wiring diagram

I still think there may be an issue with the loading connected to the output jack. I am looking at the connection highlighted in orange below.


View attachment 73666

If you continue along those paths (out through the center lug of the volume controls) you'll see that they both go to the slider switch (bottom pole... "split" to the left side and "normal" to the right). The common (center) of that pole on the slider switch goes on to the 3-Way toggle. The way that switch is set up, only one of the volume controls will ever be active as the other one's circuit will be incomplete.

Double loading the output jack wouldn't do anything anyway... it's the same thing as two pickups coming into a 3-way toggle, being combined in the center position, and then being sent along a single wire to the output... it's just moved back (or forward, depending on how you want to look at it) a step. In this case, if the slider switch wasn't there to choose one control set or the other, you WOULD have some confusing (possibly interesting) stuff going on with two volumes and two tones for the same signal, but the switch solves that issue by breaking one circuit or the other.

 

[Artie]

Re: please help with custom wiring diagram

Hey BriGuy; That's a nice diagram, but Teleplayer is correct. As you have it drawn, both vol's and tone's are active all the time. The unselected volumes won't affect the volume, but they still load the circuit. You do need to use that other terminal on the switch to isolate both input and output to the vol/tone circuits.

 

[BriGuy1968]

Re: please help with custom wiring diagram

Hey BriGuy; That's a nice diagram, but Teleplayer is correct. As you have it drawn, both vol's and tone's are active all the time. The unselected volumes won't affect the volume, but they still load the circuit. You do need to use that other terminal on the switch to isolate both input and output to the vol/tone circuits.

ArtieToo... YOU​ I'll accept a rebuke from! :butkick:

RavensNest... would you like a revised diagram, or have you been following this discussion well enough to know what we're talking about?

Teleplayer... no offense intended, but I just don't know you! Apologies for arguing when I was apparently incorrect.

 

[Brandenburg]

Re: please help with custom wiring diagram

ArtieToo... YOU​ I'll accept a rebuke from! :butkick:

i will only consider his "suggestions" lol

sorry law of the universe.. I can never be wrong,so i must always be right.. there is however a grey area where i am "mistaken" from time to time.



nothing to add.. nice drawings

 

[RavensNest]

Re: please help with custom wiring diagram

if you wouldn't mind it, a new one (revised) would be better... i actually got lost following the debate... sorry... but thank everyone for helping me!

ArtieToo... YOU​ I'll accept a rebuke from! :butkick:

RavensNest... would you like a revised diagram, or have you been following this discussion well enough to know what we're talking about?

Teleplayer... no offense intended, but I just don't know you! Apologies for arguing when I was apparently incorrect.

 

[RavensNest]

Re: please help with custom wiring diagram

do i need to solder the ground wire to the bridge?

 

[BriGuy1968]

Re: please help with custom wiring diagram

do i need to solder the ground wire to the bridge?

Yes


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[Teleplayer]

Re: please help with custom wiring diagram

Its no big deal, as its easy to get it wrong sometimes.

 

[BriGuy1968]

Re: please help with custom wiring diagram

Okay, RavensNest... try this one on for size.

ArtieToo and Teleplayer, perhaps you'd like to double-check?

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[Teleplayer]

Re: please help with custom wiring diagram

There is another thing I noticed. I don't know if is an error or not.
It is more usual to take the volume output from the wiper of the potentiometer.
I have edited the schematic to swap the connections around the way that I would do it. I hope you don't mind me doing that.

To answer the OP's question about tone caps in post #1, my opinion is that its likely better to have a 0.022uF for both tone caps, so the split coil tones sound a bit more lively.
Since you already have the components, you can use what you have got. If you find the split sounds aren't as bright as you want, then maybe try the 500k tone pot and 0.022uF capacitor combination.