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Post subject: Changing out Telecaster pickups, grounding questions.
Posted: Mon Apr 28, 2014 4:01 pm
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I'm changing out the pickups on my "new to me" MIM telecaster, in my last post I was talking about the pickups that had been installed by the previous owner, bridge was a GFS Rail Humbucker and the neck pickup looks original but I'm not sure. Anyway I've bought the Fender Custom Shop 51' Pickup Set and I'm in the process of installing them.

The ground (black) wire on both the old pickups has been grounded to the body of the guitar on the inside of the pickup cavity, then it goes on to the control knobs cavity. My new pickups wiring diagram doesn't show the ground wire in this fashion, so is this needed? Also, the old bridge pickup doesn't have a ground wire to the bridge and new pickup wiring diagram doesn't show this either, so is this needed? I've been looking on Youtube and it's shows the bridge pickup grounded to the bridge so I'm confused.

I'm going to try to resolve my inability to post some pictures, my last post had some good instructions so I'm gonna try again.

Thanks for any help!


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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Tue Apr 29, 2014 2:17 am
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If your "old " wiring / pickup sound good ( no noise , hum) do the same for the news pickups.

Some wiring diagram did not show all wiring ........


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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Tue Apr 29, 2014 6:22 am
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The old wiring is a mess, it doesn't look anything like the diagram that came with the new pickups. The new diagram shows a resistor, and the old doesn't have one, so I'm going to get resistor and install like it says. The new diagram also shows a capacitor and the old wiring does have one in it just like the one in the new wiring diagram shows, but it is in a different place. I guess I'm thinking that I want to get the wiring exactly like the new pickup diagram shows it because I don't any issues and the pickups can be the best they can be. Also, this ain't the original wiring, someone has been into the thing before and I don't know what the original scheme looked like except for the new pickup diagram. And yeah, the old pickups had some issues, when I first started playing everything sounded pretty good, but the longer I played it began to sound kinda fuzzy and muffled. My amp is a Mustang III and it's only about a year old and my DeArmond doesn't do that, so it was the pickups. The new diagram doesn't show any grounding except for the black wires associated with the pickups and output jack, nothing to the bridge or guitar body. This grounding wire break in the pickup cavity that grounds to the guitar body looks like factory work, it's very well done.


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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Tue Apr 29, 2014 6:52 am
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The ground wire from the pick up should go to the pots body .

Pots body is the main ground. From there you must have a ground wire to the body cavity ( if cavity is shielded ) and you must have a wire going under the bridge. A grounfd wire to the output jack too.

Short story ; All metal parts must be grounded together.

In the guitar , the ground is the main connexion , the common where ALL negative wires goes.
( black wires from Pickups , ground , negative to output jacks ...)

I hope this help you.


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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Tue Apr 29, 2014 10:18 am
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thanks stratele52, yeah that was what I was seeing on Youtube, and that was what I was confused about. Let's see if I've got it right. I'm going to take all the ground wires to the pot and not do the break in the pickup cavities to the body (before they were going from the pickup to the body in the pickup cavity, then continuing on to the pot). All of the ground wires from the pickups and output jack will be taken care of when I ground the pot to the body in the controller cavity. I will also run a ground from the pot to the bridge so it will be grounded also. I don't think my controller cavity is shielded, it just looks like it's painted, but the bridge side is not as glossy and looks like a different finish, so maybe that's the shield? Fender needs to address the whole wiring scheme including all the grounding so far this seems to be lacking in the diagram.

I'm going to take all the wires off the pots and switch that are on there now and start over with the new diagram, that way it should be correct according to Fender. Any thoughts about why the ground to the wood body?


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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Tue Apr 29, 2014 1:25 pm
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Black paint = shield . Test it with a meter

Bridge at ground ; just need a non insulate piece of wire between bridge and wood body , this must do a good contact from bridge to guitar ground. The other end of the wire going to pots body .


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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Tue Apr 29, 2014 2:23 pm
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Thanks again stratele52, Yep, the paint is black. So take a bare wire (no insulation) put it under the bridge where the bridge will make contact with it when the bridge is installed, take the other end to the pot where the other grounds are connected, and that will take care of the bridge being grounded to the pot and the bare wire also grounding it to the wood. Thanks!

I may be having some trouble locating the resistor that's on the diagram, Musician's Friend is contacting Fender to see if they have the part, they said it might take 3 weeks. I think I'll check Radio Shack, it doesn't look to exotic, but what do I know? I removed the old capacitor which is the right one but I didn't cut the wire when I was removing (afraid it would be too short when I move it) it so I don't know if the solder gun heated it or not, so I'm getting a new one of them too. "Do it once ,do it right" I'm hoping.


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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Tue Apr 29, 2014 3:44 pm
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impicker2 wrote:
Thanks again stratele52, Yep, the paint is black. So take a bare wire (no insulation) put it under the bridge where the bridge will make contact with it when the bridge is installed, take the other end to the pot where the other grounds are connected, and that will take care of the bridge being grounded to the pot and the bare wire also grounding it to the wood. Thanks!
Yes , good

I may be having some trouble locating the resistor that's on the diagram, Musician's Friend is contacting Fender to see if they have the part, they said it might take 3 weeks. I think I'll check Radio Shack, it doesn't look to exotic, but what do I know? I removed the old capacitor which is the right one but I didn't cut the wire when I was removing (afraid it would be too short when I move it) it so I don't know if the solder gun heated it or not, so I'm getting a new one of them too. "Do it once ,do it right" I'm hoping.
You can solder a small wire to this cap . Wich resistor are talking about ? Treble bleed resistor ? Any link for your wiring diagram


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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Tue Apr 29, 2014 4:57 pm
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I may have found a source, I've located the capacitor .05 uf pn0015552000 (the capacitor has ic 503Z on it and that's how I new it was the right one) and I can get it for $2.59. The resistor is listed as Resistor 15K pn0041738001, but it doesn't show up in the stock on the site I'm looking at. The site I'm looking at is guitarpartsresouce.com and I've sent them an email at sales@guitarpartsresource.com but it will be tomorrow when I hear back, their closed now. They have some resistors listed but they start in the 82 ohm range, they have one that's 150k and it's for a Fender guitar and I think it's for treble bleed but I would have to go back and look, so I'm confused about the much higher range. I don't know what this resistor does, it's actually shown connected to a couple of the switch connections. I don't know a link to my diagram, and sorry I can't attach a picture, that's the one thing that's so hard for me to do on this site. I still haven't figured it out. Impulse7 has been working with me and I'm just too dumb to figure it out.


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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Tue Apr 29, 2014 5:57 pm
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I'll try again, here goes.


Last edited by impicker2 on Thu May 01, 2014 3:25 pm, edited 1 time in total.

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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Wed Apr 30, 2014 1:24 am
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Thank's for schematic . No caster

I always ordered from antiques electronics ; tubesandmore.com

You"ll found everything .

Parts number is only useful is you ordered from fender dealer,

Any 15 k resistor and .05 ( or .047 standard an same job ) capacitor will do the job .

Capacitor ;
http://www.tubesandmore.com/products/C-P-600V

resitor
http://www.tubesandmore.com/products/C-P-600V


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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Wed Apr 30, 2014 5:40 am
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Thanks, stratele52, just what I need, and cheap prices too! Also another question, I had to remove some paint and wood from the front of the Bridge cavity with my carving tools, the bridge pickup was touching in this area and it wasn't "free floating". The bridge assembly wouldn't line up with the screw holes properly and the whole thing was out of kilter. I had noticed the old bridge was hard to adjust and one end was higher than the other and it was difficult to line up properly, so I carved out some wood and fixed that problem. There was marks on the paint in this area that showed the contact that the old bridge made. So now the question is have I destroyed the shielding in this area? and do I need to reestablish the shield and how do I do that. Is shielding in this area critical? Image


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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Wed Apr 30, 2014 5:54 am
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Now that I can post pictures, thanks to Impulse7, here's one with the old grounding system that was used. It was like this in every cavity with the ground wire except the output jack. Image


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Post subject: Re: Changing out Telecaster pickups, grounding questions.
Posted: Wed Apr 30, 2014 7:25 am
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impicker2 wrote:
So now the question is have I destroyed the shielding in this area? and do I need to reestablish the shield and how do I do that. Is shielding in this area critical? ]


Critical ? I don't know . You can ordered copper tape or black paint from tubesandmore to make a good shield .

On tubesanmore , you can see a video how to shield guitar . Or look at you Tube .


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