SD Humbucker: How do you determine "start" and "finish" leads?

Snoogles

Cranky-dologist
have a humbucker without the 4-conductor leads connected. just the two leads coming out of each coil.
one black, and one white for each coil.
are SD pickups' start and finished color coded?
 
Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

You can find most manufacturers color codes here http://www.guitarelectronics.com/ca...wiring_diagrams.humbucker_wiring_color_codes/ Otherwise you just use a meter and test each lead until you identify what each pair is. You can tell which coil is which by tapping on the coil with a screwdriver which will cause the voltage to fluctuate. From there you can guess which is the start/end of each coil.
 
Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

You can find most manufacturers color codes here http://www.guitarelectronics.com/ca...wiring_diagrams.humbucker_wiring_color_codes/ Otherwise you just use a meter and test each lead until you identify what each pair is. You can tell which coil is which by tapping on the coil with a screwdriver which will cause the voltage to fluctuate. From there you can guess which is the start/end of each coil.

maybe i wasn't being clear.
the humbucker i have doesn't have the color-coded (red, green, black, white, bare), 4-conductor lead that extends out of the bottom of the base plate.
there are 2 leads coming out of each coil. one black, and one white for each.
i was wondering if SD specified black or white for the start, and finish
 
Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

On a humbucker of any brand, as long as the series link is between two coil ends of the same insulation colour, the pickup will work correctly.

Do not take the colour of the coil output wire insulation as a guarantee of anything. The finish end of each coil is the one that you could easily unwrap, if you were so inclined. The start end of the coil disappears into the bobbin.
 
Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

Assuming that wrapping the wires for the adjustable coil/one nearest the bridge of a bridge pickup begins in a clockwise direction, the Start end should point to the bass side and the finish should point to the treble side. For the opposing coil, it should be reversed.

However, in the event both ends are pointing the same way due to how they're attached (which is likely), you may be able to see which direction the wire comes off the coil without attempting to unwrap it.

It's been a while since I did a hybrid so I can't recall if the ends were color coded.
 
Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

Typically, on a single con + braid humbucker, I find the two white wires linked. One black wire is soldered to the braid to act as ground. The other black wire is soldered to the output conductor that is surrounded by the braid screen.

This would make especially good sense on SD four con + shield humbuckers. On the stud coil, white goes to white and black goes to black. Zero confusion.
 
Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

unfortunately both coils are wrapped in what looks like copper foil, concealing the winds. but i think i got enough info

thanks for the help

edit: what happens if you connect the start of one coil and the finish of the other coil?
 
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Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

You can tell alot about a pu by aligator clipping the ends together in every combo and your ears will tell you whats in phase and out of phase and series or parallel. As to start and finish thats a hard one. You can at least get a relationship by using your ears. You can determine which ends pair to be series and parallel and what the phasing is.

If you are pairing with another pu then you can tell alot about winding. If its a sd then id the north and south and combine it known coils with know winding and figure out the start and finish given the listed winding for sd pu's for north and south coils.
 
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Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

edit: what happens if you connect the start of one coil and the finish of the other coil?

On an SD 4-con, that would be Black + Red (to Hot) and Green + White (to Ground), which would put both coils in parallel.
 
Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

The APH1 set I have here in front of me are: Black start, White finish.

HTH,
 
Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

i'm not really understanding the answers, so i think i'm not describing it well. so here's a diagram of my question:

color_codes.jpg

what would be the result of this wiring scheme? i don't think that's parallel. would this be out of phase?
 
Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

Nasty, thin sound. Not hum-cancelling.
 
Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

image.jpgimage.jpgimage.jpgimage.jpg

Im the diagram that is called series in phase. They mean the coils are properly oriented north start-finish - south start finish to get the hum cancelling effect of two coils with out of phase relationship of electron flow. Combined with reverse polarity north and south coils.

Ac current pushes and pulls or goes back and forth. If two coils are on phase they push and pull in the sAme direction and boost signal at the cost of hum. If they are in opposition one pushes while one pulls they fight and lose out put and hum cancel. Take two clock wise coils and wire them start to finish and theybare flowing the same in phase boosting signal. Reverse one finish hot and start ground and they are out of phase and partially cancel hum depending on polarity. In they are opposite polarity, they hum cancel completey. If not its partial.


Anyone can correct me if im wrong here or i forgot something important. Trying to make it clear and simple. Its actually pretty simple but alot to digest and wrap your head around at first. I hope im not misleading you in any way.
 
Re: SD Humbucker: How do you determine "start" and "finish" leads?

Re: SD Humbucker: How do you determine "start" and "finish" leads?

all is clear now.

thanks for the info.
 
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