Author Topic: coil select with 4 conductor (Read 9310 times)

Tim · « **on:** April 02, 2005, 10:48:47 PM »

If you're wiring a BKP humbucker with 4 conductor and want to be able to select the screw coil with a coil tap/shunt, wire black to hot of pot tag, red and screen to ground and finally green/white to tap/shunt. This way the slug coil is grounded out when the tap/shunt is activated leaving the screw coil active. Great for HSS setups when the middle coil is RWRP -you get another hum cancelling tone in pos 2 of a 5 way. Alternatively to select the slug coil in a tap/shunt wire red to hot and black/screen to ground, green/white to tap, this would give you non humcancelling parallel tone in conjuction with a RWRP coil of an HSS setup.

Baxter · « **Reply #1 on:** May 12, 2005, 11:12:55 PM »

Hi Tim,

Does'nt this reverse the phase of the whole humbucker pickup ??

HJM · « **Reply #2 on:** May 13, 2005, 06:52:32 AM »

Yes, but it's in phase with the singles, I believe :?

Tim · « **Reply #3 on:** May 13, 2005, 07:55:46 AM »

As a humbucker, it doesn't matter which way the signal goes if the pickup is used on it's own.If you had two humbuckers on a guitar they'd have to both be wired the same so as not to be out of phase with each other.
In this instance the pahse is correct for use with a RWRP middle coil and the screw coil of a humbucker to hum cancel when in parallel-if you wire the other way around,red to hot, black to gnd and green/white to tap, then you end up with the slug coil and RWRP middle on in pos 2 in parallel with no hum cancelling.