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Post by nickbachman on Jun 24, 2005 17:02:43 GMT -5
sorry if this has been covered, i couldnt find the answer by searching. today i installed a humbucker in the bridge position in my friend's fender mim strat, that usually is S/S/S. at first, i had the bridge and middle pickup wired out of phase, so i switched the leads on the humbucker. (i hope i worded that right) they're in phase now, but now whenever i touch the mounting screws or the polepieces for/on the humbucker, i get a loud buzz. what could i do to fix this? find a better ground for the bucker? thanks in advance for any help!
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Post by JohnH on Jun 24, 2005 17:40:07 GMT -5
Is the new Hb with just two wires? If so, here's a theory - see if this sounds possible:
It sounds like one wire is the ground/shield, also connected to the body of the pickup, and the other is intended as the hot connection. Reversing the leads would put the screws etc on the hot side, liable to pick up noise especially if you touch them.
You can test this idea with a multimeter set to measure resistance. Make sure the Hb pup is disconnected
and measure the coil resistance between its leads - which should be several thousand ohms. Now measure the resistance from each lead to a screw, pole or other metal part on the pup. If what Ive suggeeted is true, one lead will be almost zero resistance (and is therefore intended to be grounded) and the other will be the coils resistance.
If that checks out. it may help if you return the Hb wires as they were, and reverse the wires of each of the other two pups. But if this causes the same problem on those pups , then put them back again and take a deep breath.
Other options may involve open-humbucker surgery to separate the wires that connect to the coils, from the connection to the grounded parts. In doing this, you may also be able to introduce the tapped connections, giving you a four-wire plus shield, to enable coil cuts, series/parallel options etc. But I assume thats alot more work than you intended.
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Post by nickbachman on Jun 24, 2005 17:52:44 GMT -5
thank you very very much! it is a 2 wire hb, so you're probably correct about the screws eing on the hot side. i dont have a multimeter set to test your theory, so i'll just assume you're correct. perhaps i'll try reversing the other 2 pickups' wires. thanks again!
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