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Post subject: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Sun Jul 28, 2013 7:33 pm
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Just finished wiring up an SH-8 bridge with 2 single coils in my Strat and now I have a lot of noisy humming and can't figure this out. Here's the diagram I used, I read somewhere about swapping the green and the black around will that help? Scratching my head.... Image


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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Sun Jul 28, 2013 7:34 pm
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Great the pic didn't work, wth...


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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Sun Jul 28, 2013 7:39 pm
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Big Easy Blues wrote:
Great the pic didn't work, wth...

forum having a problem with pics right now...hum usually a grounding issue in my experience...check your wiring, and look for any cold solder joints.
wiring diagrams here if needed.
http://www.seymourduncan.com/support/wiring-diagrams/

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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Sun Jul 28, 2013 7:50 pm
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Thanks Arnold, yeah I used the 1 Hum, 2 Single, 1 Volume, 2 Tone, Auto Split Diagram from the Duncan site. plugged in and whoa! swarm of bees! checked the grounds and they appear to be okay. I don't know, hope I didn't toast one of the pots.


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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Sun Jul 28, 2013 9:02 pm
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Big Easy Blues wrote:
hope I didn't toast one of the pots.


Doubtful...check also wiring to ouput jack, and ground wire to bridge if wiring looks ok. check your solder joints real well.

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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Mon Jul 29, 2013 5:31 am
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Will do, thanks for the help I'll post results later but for now it's off to work I go.


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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Mon Jul 29, 2013 5:41 pm
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Well, checked the output jack and it is indeed connected correctly and the appear to be okay nice and shiny and secure, checked all of the connections and they also look okay nice and bright no dull solder joints and secure as well. But one thing I happened upon was that if I touch the bridge pickup with one hand the buzzing gets really loud and obnoxious but when I take my hand off of it the buzzing quiets down somewhat, however if I touch the pickup with one hand and touch say the bridge or a control knob post the buzzing gets really quiet. :?


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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Mon Jul 29, 2013 11:05 pm
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Hi,i don't think it's the wiring. I believe it's the application. On the seymour duncon site, it says that this pickup is one of the most powerful passive pickups on the market,and the wiring diagram for this pickup shows it to match to another humbucker. What your getting is overmodulation. Its just too strong to match with everything else on the line.You had a good idea in trying it,but its just too powerful. This pickup is also made in a neck version,and if you buy one of those and put them in a guitar that takes two humbuckers (sorry fender) with a three way toggle switch,then you will have something special. Good luck.


Last edited by prepaws on Tue Jul 30, 2013 10:51 pm, edited 1 time in total.

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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Tue Jul 30, 2013 7:39 am
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Clearly, something is wired incorrectly.

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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Tue Jul 30, 2013 10:48 pm
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To Martian, think outside the box.


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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Tue Jul 30, 2013 10:57 pm
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prepaws, your comments about overmodulation and not being able to mix high output and low output pickups are simply nonsense. As Martian said, something is miswired.
A few clear pics of the wiring would be a huge help.


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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Tue Jul 30, 2013 11:44 pm
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To strayedstrater,Think about it,The guy has a humbucker in the guitar with no issues. He then puts in a humbucker with twice the power and then has issues,and has checked all the wiring and all is ok. This is an extreme humbucker. You can't slap any pickup in any guitar,with any combination of other pickups and hope for the best. He has one of the most powerful humbuckers made, with two mim single coils, with a five way switch. If he takes the pickup out and puts the old one back in,PRESTO! It works again. Why? It's called MATCHING YOUR PICKUPS,and fender did this when they designed the guitar. He can swap a different pickup,but not that extreme. Perhaps before you make negative comments to people trying to help,you should think things thru. I don't claim to know everything,but i have seen this problem before.


Last edited by prepaws on Wed Jul 31, 2013 12:07 am, edited 1 time in total.

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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Wed Jul 31, 2013 12:05 am
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He doesn't say anything about the problems starting after replacing one humbucker with a different one and then the problems going away when he put the original humbucker back in.

Even if mixing high and low output pickups caused problems (hypothetically, since that doesn't cause hum and noise), the problems would only happen when multiple pickups are selected. Running just the humbucker by itself wouldn't cause hum and noise. Certainly not the wacky symptoms where touching the cover while touching other grounded parts drastically increases/decreases the noise.

That's a symptom of miswiring, pure and simple.


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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Wed Jul 31, 2013 12:22 am
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He said the wires are correct. The only ground wire that would make the noise he described, runs to the tremlo. There are just so many wires. So he puts the other pickup back, and it works great. See? Its not the wires. An sh-5 would have worked well in this setup,not an sh-8.


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Post subject: Re: Need help with wiring a Humbucker (Seymour Duncan)
Posted: Wed Jul 31, 2013 11:53 am
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I can't count the number of posters who have come here with pickup noise problems, sworn the wiring is correct, and when asked for photos, the photos clearly show the wiring is NOT correct.

Unmatched pickups will not cause this problem.

The OP did not say he put the stock pickup back and the problem went away.

Martian is one of a few recognized experts on pickup wiring in this forum. He is correct. There is a problem in the wiring.

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