Help With Fender 3-Wire Humbucker

robrob2

New member
Can you guys confirm that my Fender Modern Player Telecaster Plus 3-wire humbucker is wired in parallel mode?

StockHumbuckerWiring.jpg

The humbucker has 3 wires, a red, white and green wire + shield. The green wire and shield are grounded to the tone pot.

The coil split switch is a 2-position DPDT on/on toggle which gives you either dual coil or split single coil. The humbucker red wire and the red out wire to the 5-way switch (coming in from left in picture) are both soldered to the lower right switch terminal. This means the humbucker's red wire is always connected to the 5-way switch.

The humbucker white wire is soldered to the coil split switch's right mid terminal. This means the white wire is either connected to the humbucker's red wire or completely disconnected.

There is no black wire coming from the humbucker.

Is it possible to wire this 3 wire humbucker with a 3-way toggle for series/split/parallel?

My best guess is: The red wire is the inner (slug) coil out which is always hot. The white wire is the outer (screw) coil output. The green wire is the ground for both coils. If this is true then the humbucker is wired from the factory in parallel when the humbucker's red and white wires are connected (red and white are hot outs from the two coils) and split when you flip the switch and the white wire is not connected to anything.

It looks to me like this 3-wire humbucker is not compatible with a series/split/parallel switch because there's no way to get the serial mode. Sound right?

I have already swapped out this pickup for a SD Invader and replaced the split switch with a series/split/parallel. I ask this question because other guys with this guitar are contemplating swapping the split switch out for a s/s/p.

Thanks in advance,

Rob
 
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Re: Help With Fender 3-Wire Humbucker

Here's the resistance numbers for the humbucker's 3 wires:

Red to Green 8.6k (1st switch position)
(Red + White) to Green 4.3k (2nd switch position)

White to Green 4.3k
Red to White 4.3k

Found this quote, "Resistence for the Custom family: Series 14,000 ohms, coil cut 7,000 ohms, parallel 3,500."

So it does look like (Red + White) to Green 4.3k (2nd switch position) is parallel
And Red to Green 8.6k (1st switch position) is a single coil.

Anyone want to confirm this for me?
 
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Re: Help With Fender 3-Wire Humbucker

My best guess for wire colors:

Red = North Start
White = South Finish
Green = North Finish + South Start to Ground

Coil split switch position 1 up
Red + White = North Start + South Finish out to 5-way selector swtich = Parallel Mode

Coil split switch position 2 down
Red only = North Start = North Coil only out to 5-way selector switch

Are there other examples of guitars from the factory with humbuckers wired in parallel?
 
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