Yin-Yang Push/Pull Pot Instructions & Mods

Installation:

The Mad Hatter Yin-Yang Push/Pull Pots are assembled using high quality Bourns potentiometers. Currently these are only readily available with a 3/8” diameter bushing. Most instruments manufactured outside of the United States have a 12mm diameter bushing clearance hole. To install the Mad Hatter Yin-Yang Push/Pull Pots into these instruments you will need to slightly enlarge the mounting hole with a 3/8” drill.

Center Tap:

A humbucker pickup consist of two single coil pickups wound in opposite directions and tied together.  The two wires tied together are what we call the Center Tap.  On both the Single Volume and Dual Volume boards we have incorporated two lugs to plant these wires.  They are terminal lugs #3 & #6 on both the Single Volume and Dual Volume boards.  These terminal lugs serve as nothing more than a landing lug and have no part in the board circuit.  

The most popular use of the Center Tap is to change the pickup from a humbucker to a single coil.  This is achieved by simply switching the Center tap to Ground with a switch or push/pull pot.  With the Mad Hatter Guitar Products "Yin-Yang" Push/Pull Pots you would simply attach the "Red" switch wire to the Center Tap of the pickup you wish to split and the "Orange" wire to ground.  To use one switch to Center Tap two pickups you need to cut out the center “criss-cross” wires on the switch these are typically green.  Then simply attach the "Brown" switch wire to the Center Tap of the other pickup you wish to split and the "Black" wire to Ground. Be sure to separately tape off the ends of any wires from the "Yin-Yang" Push/Pull Pot that are not used.

 Pickup Phasing:

Sometimes knocking pickups out of Phase sounds cool and is a nice feature to have on your instrument.  This can be achieved with Mad Hatter Guitar Products "Yin-Yang" Push/Pull Pot.  Using the bridge pickup as an example we would remove the pickup wires from terminal lugs #1 & #2 and replace with the "Black" wire of the Push/Pull Pot switch on terminal lug #1 and the "Red" on termini lug #2.  If pickup has a shield wire it will remain on terminal 1. Next, if occupied remove the Center Tap wires from terminal lugs #3 & #6.    Be sure to crimp and tape off.  Then place the "Orange" Push/Pull wire with the pickup "Ground" wire to terminal #3 and the "Brown" Push/Pull wire with the pickup "Hot" wire to terminal #6.  Now with the "Yin-Yang" Push/Pull Pot in the down position you should have normal operation.  When you pull up on the "Yin-Yang" Push/Pull Pot you should notice the thinner out of phase sound.  If for some reason it's operating in the reverse, simply reverse the wires at terminals #1 & #2.  Please note knocking pickups out of phase will not work with single conductor braided shielded pickup wires. 

Pickup Swapping:

Another cool mod using the Mad Hatter Guitar Products "Yin-Yang" Push/Pull Pot is swapping the order of pickups on three pickup model guitars.  For this Mod we use the same principles as knocking pickups out of phase.  To reverse the order of the middle and neck pickups we would first free up terminals #3 & #6 by removing any Center Tap wires.  Once again be sure to crimp and tape off.  We would then move the Middle "Hot" wire to terminal #3 along with the "Black" Push/Pull wire.  We would then move the Neck "Hot" wire to terminal #6 along with the "Red" Push/Pull wire.  The "Orange" Push/Pull wire would then be placed on terminal #4 and the "Brown" on terminal #5.   Now with the "Yin-Yang" Push/Pull Pot in the down position you should have normal operation. When you pull up on the "Yin-Yang" Push/Pull Pot the middle and neck will reverse order:  Switching will be as follows: 

  • Postion 1 - Bridge
  • Position 2 - Bridge & Neck
  • Position 3 - Neck 
  • Position 4 - Neck & Middle
  • Position 5 - Middle

You will also notice that each pickup will now be operated by the other's tone control.  To really achieve the full effect we recommend having one tone pot set at 500k with a .022 uF Cap. for a brighter tone response and the other tone pot set at 250k with a .047 uF Cap. for a warmer tone response.  This will further change the dynamics of each pickup when engaging and disengaging the Push/Pull Pot.  If for some reason the Push/Pull is operating in the reverse, simply reverse the wires at terminals #1 & #2.  

Guitar Wiring Modification with The Mad Hatter Yin-Yang Push/Pull Pot

Jumping Pickups Together:

On a three pickup style guitar it’s nice to have as many options as possible. By simply installing a switch to connect the bridge and neck pickups together will provide you two more very useful tones. With a 5-Way switch in position 1 and a push/pull switch engaged you would have both the bridge and neck pickups at the same time. Move the switch to position 2 and now you have all three pickups at the same time. Position 3 is still middle pickup only, position 4 all three pickups again and position 5 will be the bridge and neck pickups together again. Disengage the switch for normal operation. With the Mad Hatter Guitar Products "Yin-Yang" Push/Pull Pot you would simply attach the "Red" switch wire to the bridge hot at terminal lug #2 on the Single Volume Board and then the "Orange" wire to the neck pickup hot on terminal lug #5. Be sure to separately tape off the ends of any wires from the "Yin-Yang" Push/Pull Pot that are not used.