Vintage Tone Switch on a 4001

[Baker69]

Hi guys,

I'm retro-fitting a vintage tone switch to my 4001, I received a wiring diagram with the switch but it seems to be for the 4003, the 4001 seems to be wired totally different.

The existing .0047k capacitor goes from the selector switch to the centre tag on the treble tone control. I presume I need to run a second wire from the same connection on the selector switch and connect these to the top 2 tags on the push-pull switch. I think you have to re-wire the bottom part of the new push-pull pot as existing, however what happens to the centre tag which will now be empty as it will now be wired to the top part of the push-pull switch? Do I leave this as it is or earth it? Am I right in my assumptions so far?

If anyone could help on this it would be most appreciated, someone must have done this same modification so may have a diagram they could post our perhaps some instructions.

Thanks.

[cjj]

The 4001 & 4003 should be wired the same way - at least as they came from the factory before they removed the cap or added the selector switch.

In any case, all the switch needs to do is to "short out" the 0.0047uF cap. So, all you need to do is add 2 wires, one to each end of the cap and connect the other ends of those wires to the switch...

[Baker69]

The 4001 & 4003 should be wired the same way - at least as they came from the factory before they removed the cap or added the selector switch.

In any case, all the switch needs to do is to "short out" the 0.0047uF cap. So, all you need to do is add 2 wires, one to each end of the cap and connect the other ends of those wires to the switch...

I'm a bit confused now, I think the wiring is all original but the .0047 capacitor on my 4001 is going from the selector switch to the Treble Tone pot. On the Ric site I downloaded a 4001 wiring diagram and the .0047 cap goes from the selector switch to the treble volume pot?

Also the outputs to the socket on my 4001 go from the bass volume pot and the treble tone pot?

[cjj]

The diagram on the RIC site is correct. There should be 0.047uF caps going from the selector switch to the tone pots and a 0.0047uf cap (note one more zero) going from the selector to the treble volume pot. The output jacks should go to the volume pots as well.

Here's a picture of the wiring on my '84 4003, which I know is original and should be the same as a 4001:

The 0.0047uF cap is a bit hard to see, below the other 2 caps, and goes from the selector switch (3rd lug from the top) to the center lug on the lower right (treble volume) pot...

[antonius]

Rickenbrother has an excellent 4001 wiring diagram that he used to have up on his website until people kept violating the Terms of Use. I would recommend asking him nicely if he would email it to you. It helped me a lot when I struggled to make sense of the wiring on my 4001

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[johnallg]

Could it be the knobs are on the wrong pots? Check the wiring against the RIC drawing and I'll bet it is correct but the knobs are on the wrong pots.

[Baker69]

Could it be the knobs are on the wrong pots? Check the wiring against the RIC drawing and I'll bet it is correct but the knobs are on the wrong pots.

Good job you suggested this, although when playing the bass I instinctively knew which control did what, I just checked and the treble volume and tone knobs are reversed, so when I was looking at the wiring I turned the pickguard over to read the control knob which was throwing me.

So that has cleared up the issue as to whether the 4001 is wired correctly - which it is, just need to check the wiring diagram supplied with the push-pull switch again!

[johnallg]

Probably my drawing; one vendor was using it....

The red wires from the switch go across the .0047uF cap. Solder one wire at the pickup switch and the other red wire at the volume pot tab. That should so it for you.

[Baker69]

The switch is fitted now thanks and everything is working ok. Sounds quite good with the treble pickup giving out its full output, it's opened up a lot more tone options on the bass for me (I suppose it sounds like a 4003 now!)

I did have to leave the cerrated washer off the cavity side as the switch was tight on the bottom and I didn't fancy having to drill wood out to make it fit.

I would like to hear how it sounds with the high gain neck pickup instead of the toaster that is currently fitted, I think I'll try swapping it over.

[cjj]

Glad to hear you got it all sorted!

[Baker69]

Glad to hear you got it all sorted!

Cheers.

I had intended to wire it so that it worked the opposite to how the push-pull switch works on the 4003, i.e. with the vintage tone being in the 'in' position, but I wired to the top 2 pins instead of the bottom 2 so it ended up being wired the same. I might swap them round as I do prefer the vintage tone as my main tone.

[Kronborg]

Glad to hear you got it all sorted!

Cheers.

I had intended to wire it so that it worked the opposite to how the push-pull switch works on the 4003, i.e. with the vintage tone being in the 'in' position, but I wired to the top 2 pins instead of the bottom 2 so it ended up being wired the same. I might swap them round as I do prefer the vintage tone as my main tone.

Just to chime in, I have done it the same way, with the vintage tone being the "in" position as i prefer the vintage tone over the modern tone too, though I like to have the option.

[Baker69]

Glad to hear you got it all sorted!

Cheers.

I had intended to wire it so that it worked the opposite to how the push-pull switch works on the 4003, i.e. with the vintage tone being in the 'in' position, but I wired to the top 2 pins instead of the bottom 2 so it ended up being wired the same. I might swap them round as I do prefer the vintage tone as my main tone.

Just to chime in, I have done it the same way, with the vintage tone being the "in" position as i prefer the vintage tone over the modern tone too, though I like to have the option.

The more I play it the more I'm considering altering the wiring on the switch as I predominantly use the Vintage setting (currently in pull position) so am getting a bit weary of checking to see if it is pulled out. I presume it is just a matter of swapping the wires to the 2 bottom lugs instead of the top 2?

[johnallg]

The more I play it the more I'm considering altering the wiring on the switch as I predominantly use the Vintage setting (currently in pull position) so am getting a bit weary of checking to see if it is pulled out. I presume it is just a matter of swapping the wires to the 2 bottom lugs instead of the top 2?

Yes.

[wim]

All the tones from your 4001 are vintage
I used the volumes as bass roll off filters for the caps on both pickups.
A cap on the neck pickup is good fun too. Everybody should have tried that at least once in his life.