The best way is to work it out for yourself using a multimeter on the ohms setting. If you haven't got a multimeter, I strongly suggest getting one. You don't need to spend much and they are always useful when working on guitars.
With that type of selector switch, you'd solder the pickup output to the tab on the side you want the switch to select that pickup. so if you want the standard arrangement of down for bridge and up for neck, then the bridge pickup is soldered to the lower outer tab and the neck to the upper outer tab.
That type of switch works by actually being two 'normally closed' switches joined together. In the centre position, both contacts are made. In the 'down' position, the lever pushes away the upper metal contact spring from the centre contact block, so that only the lower metal contact spring makes contact. In the 'up' position, the reverse happens.
The enclosed 'box' type of switch (the type normally supplied on PBG kits) works in a different way, and with the switch in the 'down' position, contact is made between the upper terminal and the centre terminal (and vice-versa).
Simon is all over this one with great advice!
I second getting yourself a DMM (Digital MultiMeter).
Not only are they invaluable for troubleshooting, but are a great way to learn about signal flow in guitar circuits.
It helps to kind of "visualise" where the signal goes from one component to the next.
I prefer DMM's that have an audible beep for continuity testing rather than having to watch the screen to zero out.
Like SB said, they're not very expensive and you'll be surprised how much you use one for other things once you get one. (like checking battery voltage)
Making the world a better place; one guitar at a time...
So I’ve had another look and the pup selector makes sense now phew!!! How do I know which way round the jack socket wires go...
And then where do the pup wires get soldered? The diagram seems to say one to the volume and one to the back of the one of the volumes?
And finally what’s the extra wire coming from one of the tone pots??
Haha that’s it for now (probably have more questions in 2 mins!) and thanks for all the support!
I’m really enjoying doing this but it certainly does give me brain ache very quickly! Very envious of all you knowledgable chaps!
The braided wires are the ground connections (pickups and output wires) so go to the back of the pots (pickups) and to the sleeve connection (jack socket). On the jack socket, the sleeve connection is the one at the top, that is pressed to the metal barrel that runs through the jack socket and which touches the 'sleeve' part of the jack.
'Mono' jacks are better described as TS jacks (tip + sleeve) whilst 'Stereo' jacks are better described as TRS jacks (tip + ring + sleeve).
The spare wire on the back of the pot is the bridge ground wire.
So I’ve been piling away and buffing this morning and the finish is getting to where I want it! Certainly not perfect but I’m chuffed with it...
Just keep rubbing away!
If you want to identify it, I'd print out a label and glue it in so it can be need through the soundhole before you put any pickups in (to make it easier). E.g. Gibson use an oval orange label.
Looking good. I bet you like the way the grain changes when you move it around in the light.
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