Yeah, great find!
Don't assume the pickups are broken- they are active as stated above- need a battery.
An EMG pre-amp connected to those would probably be be a quick, easy, lo-cost way to get it up and running, ending with a versatile bass.
Find an EMG wiring diagram and wire those pickups same as EMG DC's, but straight to the jack, to see if they work ok.
If so, then I'd suggest going the EMG BQS EQ with stacked bass/treble and stacked mid pot (it'll come with the correct pots and knobs you'll need), as it's close to the way that bass was originally pre-amped.