SD Jb Jr - Black and green wires on Mexico Stratocaster

[Ichabod]

Hello, my first post here.
I bought a Seymour Duncan JB Jr Bridge for my Fender Stratocaster Standard Made in Mexico.
I am clever enough with the iron solder and I'm gonna make the work by myself.
This is the wiring I want: https://docs.google.com/gview?embedded=true&url=http%3A%2F%2Fwww.seymourduncan.com%2Fwp-content%2Fuploads%2F2016%2F05%2F1SCH_2S_5W_1V_2T_AS.pdf.
Stock mexican neck and bridge pick up, 5-way position, with the bridge JB Jr auto-split in position 2.

This is my first work with pick up and before to do anything I want to ask something.
Following the wiring I have to solder the Black wire of the Jb Jr to the switch, and the Green wire to the ground.

But I heard about Fender guitars where the other pickup are original Fender I should invert these black and green wire. So, Green on the switch and Black to the ground.

Somebody used the original wiring, sombody had inverted the two wires.
What should I do with my Mexican Stratocaster?

Thank you!

 

[Mincer]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Welcome to the forum!

Ours & Fender's wiring is sort of backwards. I think the easiest way is to just reverse the hot & ground on the single coils, and that should work.

 

[Ichabod]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Thanks!!
I guess the problem is in the position 2 when the JB Jr (splitted) and the original middle single coil are selected. Should I reverse the white and the black wires just of the middle pick up?
But, seems to me I work less if I reverse the hot and ground (black and green) of the new JB Jr pick up without touch the original. I'd prefer it. Or the result will be not the same? Doesn't matter for me to have "backward" the Seymour Duncan.

Anyway, is there the problem like I thought about the backward? Even if my guitar is a cheaper Fender Stratocaster Made in Mexico with its cheap stock pick up?

 

[Mincer]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Reverse the green & black on the JB Jr, and that should also take care of it.

 

[Ichabod]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Great! You know, we never too much sure.:nervous:
Thank you a lot.

 

[Mincer]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Let us know how this works out (for other people with the same problem).

 

[Ichabod]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Of course I let you know. Give me some days.

 

[Ichabod]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Finally I worked on my Stratocaster. Just to begin I just replaced the original pick up with the JB Jr with no auto-aplit. GREEN, on the switch and BLACK on the ground, so them are reversed looking at the Seymour Dunacan wiring. Silver (Grey) to the ground, too. RED and WHITE, twisted, soldered and taped together.
I checked with the tester the contacts on the pick up and the soldered point of the wire, them are ok.

Everything works, but I noticed a little TIC when I switch the pickups, I'm not sure there was early. Problem?
Then, you know the hum of the single coil, right? In position 4 (neck and middle) the hum is cancelled, it is not in position 2 (middle and bridge). Only the bridge pickup is totally silent.
Explanation about the hum in the position 2, please.

Later we should see better the auto-split wiring because there's something difference in the Stratocaster's original wiring: the caps is on the Tone 2 and this change some wires, I'm bit confused, but one thing at a time.

Thank you!

 

[Mincer]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Well a single coil and a humbucker together will still hum. That is my guess where the hum is coming from.

 

[Ichabod]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Thank you. And I can say the TIC I can hear when I use the switch is normal, my other guitars do it, too.

About the sound, I can't compare directly with the original pickup, but in position 1 and 2 the clean sounds right enough, and it's alright also the high gain distortion. I have a bit doubt with my TS808 DIY clone, maybe I lose a bit of bass in position 2 compared to position 1, 3, 4 and 5. It could be normal, position 2 with two pickup is bright, usually. Then position 1 is "normally bright and bassy".
Do you think if I mounted the JB Jr in the wrong way, I mean the hot and ground reversed, should I hear it well?

Sorry, I have no experience and my other giuitars are too much different for compare this issue (if it is an issue).

Thank you.

 

[Ichabod]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Sorry for the double post.
Ok, I can say, in position 2 with stock middle pickup and JB Jr I loss bass. I can't notice much in clean sound, but with a slight overdrive or a boost seems to play with a treble booster with bass cut. Should I put the Green and Black following the original Seymour Duncan schematic?

 

[Mincer]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Well, that could be out of phase...that is usually what happens if it is out of phase. Is the middle pickup a stock Fender pickup?

 

[Ichabod]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Thank you, Mincer.

I'm starting to think that the pickups are out of phase, indeed.
Is the middle pickup a stock Fender pickup? This is the problem. The pickups ARE the original stock, but my Strat is not an American, it is a Made in Mexico, maybe these pickups don't make the exception, and I have just to follow the Seymour Duncan wiring because that is fine.

I'm gonna reverse them next time I open the guitar. But I want also to solve another question.
This is the wiring in my Strat:


This is what I want to get:


Some wires are mixed and I can't figure how I should connect them for the Auto-split.
I don't want to remake alla the wiring because my iron solder have a little tip and I had some problem to desolder the wires on the pot.
Some idea for the wiring?

 

[Ichabod]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

The cap on the Tone 2 is on the Tone 1, and this changes some wires on those pots. But I guess I have just to move the wires from the Tones pot, whatever they are, to the new points, namely, where are the white wires of the neck and middle.

And, of course, take off the jumper on the switch, add that new wire coming from the ground and connect to the switch the white and red wires of the JB Jr.

Suggestion?

Thanks.

 

[Mincer]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

You are on the right track. You can reverse the hot & grounds of the 2 singles, and you should solve the phase issue. You can then move on to the tone pots. To get these sorted out, I would just rewire where the cap is, so it is like the diagram. Those are pretty easy to solder to a pot.

 

[Ichabod]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

I don't know how rewire will be easy to me, unfortunately my iron solder's tip is not hot and bigenough to desolder quickly and easily the ground points on the pot. I should move cap and wires, but meybe I can't.
If moving the tones' wires from the siwitch the wiring will work I'm ok with that.
Probably Seymour Duncan shows the Amaerican Stratocaster wiring, that is the difference.

I'll let you know.

 

[Ichabod]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Done!
I rewired the JB Jr. following the original wiring by Seymour Duncan. I rewired for the auto-split option without change too much the Strat wiring. And everything works!
The position 2 sounds good, I guess, (I wish), and Fenderish enough. I have adjusted a bit the height of the JB jr. for the different volume. I also adjusted a bit the poles. It is almost perfect, now.

 

[Mincer]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

Awesome! I am happy it worked! Can we hear it?

 

[Ichabod]

Re: SD Jb Jr - Black and green wires on Mexico Stratocaster

I have no way to record it in a good quality.
I have to build a Cabinet Simulator, but not now. If it will be ok I'll record something with my pc using some pedals.

Thank you!