rushbo Posted March 19, 2017 Share Posted March 19, 2017 Hi Basschat Hivemind, I recently rescued a poorly OLP MusicMan bass (passive) and very lovely it is too. It's the three knob version. My plan was to upgrade it with a Wilkinson Pickup. That's where the fun started. The pup I've removed has just two wires leading from it - the Wilkinson Pup has one, divided into four: Black Yellow Red/White soldered together. Some (rather limited) instructions were included, but no diagram. I can't seem to find anything on the web that is exactly what I'm after - there are some posts on here, but they seem to be written by people with a decent knowledge of the tech. I've wired up many a P bass and even a six string or two, but this one is eluding me. Can anyone hold my little hand or point me in the direction of a passive, four wire, three knob wiring diagram, please? Quote Link to comment Share on other sites More sharing options...
MoonBassAlpha Posted March 19, 2017 Share Posted March 19, 2017 What are the three controls supposed to do on a single pickup? Volume,tone and blend between single and dual coil? Quote Link to comment Share on other sites More sharing options...
pete.young Posted March 19, 2017 Share Posted March 19, 2017 If it's the same as the OLP 5-string MM3 that I used to have, it will have two volume controls, one apparently for each side of the humbucker, and one tone control. Quote Link to comment Share on other sites More sharing options...
rushbo Posted March 19, 2017 Author Share Posted March 19, 2017 [quote name='pete.young' timestamp='1489933331' post='3260898'] If it's the same as the OLP 5-string MM3 that I used to have, it will have two volume controls, one apparently for each side of the humbucker, and one tone control. [/quote] Yup, that's it, as far as I remember. I got as far as plugging the instrument in, checking that the three pots all did something and then started taking it apart. Quote Link to comment Share on other sites More sharing options...
KiOgon Posted March 19, 2017 Share Posted March 19, 2017 How's about:- https://www.dropbox.com/s/pnvefqapt7qhf91/MM%204%20wire.jpg?dl=0 Leave your red/white soldered together & use the black/yellow as black/red should be good John Quote Link to comment Share on other sites More sharing options...
rushbo Posted March 19, 2017 Author Share Posted March 19, 2017 [quote name='KiOgon' timestamp='1489938602' post='3260939'] How's about:- https://www.dropbox.com/s/pnvefqapt7qhf91/MM%204%20wire.jpg?dl=0 Leave your red/white soldered together & use the black/yellow as black/red should be good John [/quote] You're a gentleman...thank you so much. Quote Link to comment Share on other sites More sharing options...
pete.young Posted March 19, 2017 Share Posted March 19, 2017 [quote name='rushbo' timestamp='1489935232' post='3260914'] Yup, that's it, as far as I remember. I got as far as plugging the instrument in, checking that the three pots all did something and then started taking it apart. [/quote] I never understood why they did that. Unless you have both volumes on the same setting, it used to hiss like a bastard. Quote Link to comment Share on other sites More sharing options...
MoonBassAlpha Posted March 20, 2017 Share Posted March 20, 2017 Is there much sound difference between the 2 coils when they're that close together? did OLP just do it to maintain the look of the full-fat 'Ray? Quote Link to comment Share on other sites More sharing options...
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