I had a topic a couple of years ago about the annoying controls on the Fender Coronado Bass reissue. As usual I procastinated until it was getting to the point of moving it on, but I really love it's looks and it fits with the sixties image of the band.
If you're aware, it comes with Fender Phonytrons (which are actually pretty good, i'll come to that ) and unfathomable Gretsch style wiring. So instead of intuitive pickup tone and volume controls its all really a bit of a mystery. I've pretty much just been running all the dials at 10 and using the amp for tone control. I was thinking of banging some TV jones ThunderTron or even Thunder Mags to beef it up a bit and have a proper look at the wiring
So I got together with my favourite guitar guy, George Russell. He reckoned he could rewind the pickups to TV jones specs so that was a bonus and as for the wiring - a download from the Ric website of of their 4001S mono wiring diagram and all of a sudden It's a totally different guitar. The standard arrangement of each pickup having the luxury of independently set volume and tone and the switch having neck/both/bridge all working as any sane man would expect it to is great. It turns out that the phonytrons kick out exactly the same as a ThunderTron never mind a standard FilterTron - the bobbins are wound as much as they'll take and are made if good quality materials...... so no work needed there. It's the new wiring that has really brought the guitar to life.
If you have one of these and you find it a bit flat and underpowered then get the wiring done - do away with that weird blending nonsense that means you can never run one pickup without the other. George was worried about the ric wiring bleeding power from somewhere (can't remember exactly but is was to do with pre or post tone contol to the volume pots) but I can vouch for its efficacy.
Hope this might be of use to someone