Question about EMG pickups?

[JustForSport]

If the pickups are powered- have a 'hot' lead from the battery, then they're active. This should require 3 leads from each.
Passive pickups do not have a 'hot' lead from the battery,
but may sill have 3 wires- a braided ground, a - (ground side of coil), and a + signal lead going to the vol or bal pot, then to the preamp.
(Some basses are called active, but the pickups are passive, but coupled to an 'active' preamp).
Active pickups should be able to be replaced by EMG actives with no add'l changes.
Active pickups replaced with passive pickups (such as EMGhz) will require the higher resistance pots- 250k or 500k typically.
Photos of the control cavity would help, as I was unable to determine whether those G+B pickups are active or not.

 

[JustForSport]

Found a photo of what you may have-
these look like EMG 40 size, but may be EMG 45 size.
From the old 'bay listing, it shipped with an active/passive switch,
altho active pickups can be wired with an 'active/passive' switch that just bypasses the preamp, still leaving the pickups powered.

 

[DWBass]

As per the OP's measurements, they match the EMG 45's.

 

[Bassworship1]

Thanks everyone for some great info. I'm going to take this bass to a custom shop here close and let the tech see it and give me so e ideas.