NOW what did I do wrong?!

[wildbill59]

Man, I have the best of intentions! I have an older MIM Standard P-bass, decided to upgrade the electronics. So, I picked up an Original 62 Precision Bass pickup (used, but it read a good 10.7 on my multimeter), a pair of CTS 250 solid-shaft pots, a Sprague .1mfd cap and a Switchcraft jack. Hooked everything up according to a 1962 USA RI wiring diagram since the pickup has the old copper ground plate. Plugged it in, barely has half the volume it used to. No hums, buzzes or hisses, just very little volume. Any ideas? Hope somebody has some thoughts. Thanks in advance!
Wild Bill

[luknfur]

FWIW:

wire the pup straight to the jack and see what you get. 10.7 sounds on the steep side but haven't had those. Think a 1/4 pdr's only 10.4.

Swapping the terminals on the jack can get low output but with a mono jack it's pretty hard to cross up - but not impossible.

If you've got the pup a mile from the strings as well.

If the pup is good to the jack, you know it's in the harness somewhere - assuming you've isolated the problem to the bass to begin with.