Ground Wire Locations

I'm looking for the locations for ground wires, more specifically, any pertaining
to the BCM (body control module).
-All of the gauges in the cluster stopped working
-Power windows don't work (while the vehicle is running. the windows DO work
with the key turned back to the ACC position- engine off),
-overhead console displays "--" where there should be numbers (temp, miles
traveled, distance to empty, etc). the compass does work

Fuses are good. replaced the cluster plug in the dash harness.

before i go and replace the BCM, i want to check all the grounds. My factory
service manual tells me that there are grounds, with a corresponding ground
number, but not a physical location for said grounds, i have been able to figure
out where a couple of them are but i need to know if there are any that i am
missing.
I have found a list of ground locations for other Jeep models but not for the ZJ