"Would you point the bass-cap out for me, please?"
The .0047 cap is the LITTLE light yellow cap kind of under the larger light yellow .047 caps. I believe it runs from the 2nd pot to the switch. Go to the rick forum or Joey's bass notes to find out how to do the bypass. It's pretty easy and well worth the mod in my opinion.
I believe that this tiny cap has been responsible for the majority of pickup swaps on the older rick basses. Most players just didn't know why their rickenbacker sound was so anemic compared to their p/jazz basses and lots of folks switched out the pups to try and get that fuller sound.
Many players love the cap in place but personally I love the cap bypassed. A few years ago I got my 4005 and the cap was in place. To me it was kind of a plink-plunk bass sound...when I removed the cap WHAT A DIFFERENCE!!! I never ran a preamp though, and perphaps it would have sounded much better through one. My 76 already had the cap removed and I love the sound of that bass, and it has one of the nicest feeling necks of any bass I own. Great deal on a great bass!!