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FDP Forum / Guitar Mods, Repairs, and Projects / Guitar wiring mod help

Next 20 Messages  
STR87

Panama

Jul 9th, 2019 06:05 PM   Edit   Profile  

Hi, currently own a Fender showmaster hh, 2 humbucker, 1 vol, 1 tone. I would like to have a split coil config for it. I found this wiring diagram in the link below which is what i want except that instead of the 3 way toggle switch i want to install a 3 way selector blade switch. Is it possible to make it work? what would be the wiring to the pickup selector instead?

Thanks for the help!

guitar specs and wiring

Peegoo
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Jul 9th, 2019 07:03 PM   Edit   Profile  

It's simple. You wire it up just like a Tele (with the three-way blade switch...see pic below).

You also run the red and white wire from each pickup to the push-pull pot as shown in the PDF you linked.

The tree-way switch selects either the bridge pickup, neck pickup, or both.

With the pot pulled, the coil(s) of the selected pickup(s) is split.

Tele switch

Mick Reid
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Australia

American-made in Oz!!
Jul 9th, 2019 07:59 PM   Edit   Profile  

What Peegoo said!

I was looking for a graphic I had that shows the translation of toggle connections to a blade switch but I can't find it.

Also worth mentioning that fitting a lever (blade) switch into that tele will require some creative woodworking.
I'm sure it can be done, but it won't be a simple drop-in job.

There's more advice here if you need though!


STR87

Panama

Jul 9th, 2019 08:43 PM   Edit   Profile  

Thanks i will try the wiring suggested, my guitar has a pickup blade switch that's why my question, so no problem there! I also found this wiring diagram below linked but it uses 2 push pulls instead of 1 single one as the first wiring posted. What are the differences of either one? i prefer using one push pull at the tone knob for ease of operation.

Wiring Diagram 2

Mick Reid
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Jul 9th, 2019 09:35 PM   Edit   Profile  

The first diagram splits both pickup simultaneously. The second splits the pickups individually, meaning diagram 2 would allow switch position #2 (middle) to be one of four combinations as follows:

Bridge SC + Neck HB
Bridge HB + Neck SC
Bridge SC + Neck SC
Bridge HB = Neck HB


STR87

Panama

Jul 9th, 2019 10:52 PM   Edit   Profile  

Got it!
There is a common ground on the 3 way toggle switch in the first diagram where the bare+black and bare+white are soldered. Where do you suggest i should solder it best to since i will be installing the 3 way blade selector instead?

Mick Reid
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Australia

American-made in Oz!!
Jul 9th, 2019 11:54 PM   Edit   Profile  

Yes, those are your ground (negative) wires. Solder them to the back of a pot. There is usually a tab on the switch portion of a push-pull pot that is for the ground also, where ever is easier to get to. You can also extend those with another piece of wire if they don't reach conveniently.

If you look at the red wire in your diagram, you'll see there is a conductor running from the back of the volume pot to the back of the tone/push-pull pot. That is your ground. The two pots should be be grounded together either as shown or via shielding.

Also worth noting that typically there is no ground wire directly connected to a blade switch. However some import lever switches have a ground lug, and other times the pickguard shielding will act as a ground connection, but it's not completely necessary.

I like to try and have all my grounds connected in one spot (on one pot?) but sometimes it doesn't work out that way. As long as all grounds are connected somewhere, that's what's important.

Hopefully I've explained that clearly enough. I'm a bit caffeine depleted and tired...

(This message was last edited by Mick Reid at 06:27 AM, Jul 10th, 2019)

Peegoo
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Jul 10th, 2019 06:59 AM   Edit   Profile  

Great advice, Mick.

STR87

Panama

Jul 10th, 2019 09:25 AM   Edit   Profile  

I would like to add a treble bleed cap for the push (humbucker) setting only. Do i wire it to the first and second lug of the volume pot as i regularly do?
Also i'm going with the wiring below which uses the volume pot as push pull instead of the tone pot.

guitar wiring 3

Te 52

Laws of Physics

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Jul 10th, 2019 12:06 PM   Edit   Profile  

"...I would like to add a treble bleed cap for the push (humbucker) setting only..."

I assume by this you mean that you only want the treble bleed circuit to be active when humbucker mode is selected (push-pull switch in down position).

Unfortunately, that is not possible with your setup. A normal treble bleed circuit will be active all the time, whether in humbucker or single coil mode. And yes, you would put it between the first and second lugs on the volume pot.

If you had an extra pole on the push-pull, that would be possible, but I have never seen a 3PDT push-pull pot.

Another option would be to have the push-pull only put one of the pickups in single coil mode. That would free up a pole on the push-pull and allow it to be used to disconnect the treble bleed circuit when that pickup is in single coil mode.

One final note: Since the Showmaster does not have a metal control plate, it is doubly important that all the grounds be connected with wires.

Peegoo
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Jul 10th, 2019 05:21 PM   Edit   Profile  

Yet another option would be to install a push/pull pot on the tone control and that would give you a switchable treble bypass.

STR87

Panama

Jul 11th, 2019 01:16 PM   Edit   Profile  

Ok, when the push pull pots arrive i will first test the treble bleed on both settings. i usually use a .001uf in series with a 150kohm resistor.
i also notice the difference in the wiring colours of the first and last diagrams posted. (red and white/green and black) vs (red and white/red and white) on the push pull pot.
the pickups i'm wiring are: Seymour Duncan SH-1N RP '59 reverse polarity humbucker (neck), Seymour Duncan SHPGP-1B Pearly Gates Plus humbucker (bridge).

Mick Reid
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Australia

American-made in Oz!!
Jul 11th, 2019 03:59 PM   Edit   Profile  

Seymour Duncans are white & red for the north & south finishes respectively.

See the link below for a handy reference of wire colour codes for a range of common brand pickups.

HB wire colours by brand

STR87

Panama

Jul 15th, 2019 10:15 AM   Edit   Profile  

Thanks, if i would like to use the two inner coils instead, what wires do i change? (guessing neck green for black, bridge red for white).

wiring diagram 1

Te 52

Laws of Physics

strictly enforced
Jul 15th, 2019 04:19 PM   Edit   Profile  

If you want to get the inner (non-adjustable, slug) coils when you coil split:

* greens and bares to ground
* blacks to selector switch
* reds and whites together to push-pull

(This message was last edited by Te 52 at 11:52 PM, Jul 15th, 2019)

Peegoo
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Jul 15th, 2019 06:01 PM   Edit   Profile  

Here's the completest list of humbucker color codes. I put this together years ago and I keep it updated.

Suitable for framing

STR87

Panama

Jul 16th, 2019 04:27 PM   Edit   Profile  

Thanks for the help! I just finished rewiring the guitar. The results are excellent, coil splitting both humbuckers gives a solid single coil sound with nice dynamics.

Peegoo
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Jul 16th, 2019 09:29 PM   Edit   Profile  

Outstanding!

STR87

Panama

Aug 7th, 2019 06:37 PM   Edit   Profile  

Was wondering how to mod this wiring (what i actually have) to 50's. Heard very nice things about it and really want to try it!

Wiring diagram 4

Te 52

Laws of Physics

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Aug 7th, 2019 10:30 PM   Edit   Profile  

Not sure what you mean by "...to 50's." Could you clarify?

Next 20 Messages  

FDP Forum / Guitar Mods, Repairs, and Projects / Guitar wiring mod help




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