![]() ![]() We solder the Red and White wires together and tape them off. So, we begin our SH-4 JB installation by identifying the Black Wire as the Hot. Combining the two makes the humbucker almost twice as loud as a single-coil, and it is also responsible for its warmer tones because of phase cancellation. This means that we run one coil right into the other to create one long continuous path for our signal to travel. The “standard” way to wire humbuckers is in Series. Wiring Codeįor the Seymour Duncan SH-4 JB, one coil uses Green and Red while the other uses Black and White (Fig 1). The Shield and the coils are not connected, but the Shield does connect to Ground. Its primary purpose is to trap radio frequencies that reach the pickup and shuttle them to Ground before they degrade your signal. The color that goes to each is called the pickup’s “Wiring Code.” Unfortunately, there is no standard Wiring Code, and it varies between manufacturers. Each coil has a positive and a negative wire. The four colored wires are called “conductor” wires because each of them carries current to and from the two coils in the humbucker. It’s a high-output, versatile pickup that sounds very good in the Neck and Bridge positions. The SH-4JB is a humbucker that uses a balanced coil configuration to produce improved harmonics with just the right blend of sustain and distortion. If there is just a little bit of overdrive in full humbucker mode, then it’s likely that rolling back on the spin-a-split will allow the sound to clean up a little too.In the Seymour Duncan SH-4 JB wiring that we’ll be doing, the pickup is installed using four colored conductor wires and a bare wire. It gives us some of the single coil bite and snarl, without losing so much of that throaty humbucker roar. Here’s a great video that demonstrates the sounds available when a spin-a-split control is connected to a Seymour Duncan Hot Rails pickup.Īs you can see, the in-between sound mixing single coil and humbucker sounds is very usable. ![]() This can give us a huge range of sounds to work with and is another useful weapon in the guitar wiring tech’s arsenal! ![]() ![]() These are widely available, and remove the connection entirely when the control is turned all the way. But wait – in fact, they are of course still slightly connected to ground, just with a large resistance (500K if a 500K pot is used).Ī good way to get rid of this slight lingering connection to ground would be to use a “no-load” tone control. And when the control is turned all the way up, they are not connected to ground at all – a normal humbucker setup. So when the pot is turned all the way down, the red and white wire will be connected directly to ground – a normal coil split setup. Our red and white wires are connected to the middle lug and the right-hand lug is grounded. The interesting thing is what we’ve done with the second pot (marked “SPLIT”). This is for just one humbucker:Īs you can see, the green and bare are grounded as usual, and the black is still used as the output hookup to either the switch or the volume control. And the best thing is, it’s not even hard to do! It gives you a control on your guitar that gives you a humbucker sound at one end of its range, a single coil sound at the other, and an infinite blend of the two as you turn the control through its sweep. This is where the Spin-a-Split mod comes in. But wouldn’t it be nice if we could choose not just those two sounds, but anything in between as well? In a previous article we looked at how to rig up a simple switch to split a humbucker to a single coil. ![]()
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