Where's My Fuel Pump Ground?

[ThomasKinzer]

I'm trying to confirm that my fuel pump is dead before I pull the tank.

No gas at all up front.
No buzz.
Relay is good.
12.3volts to pink wire in taillight harness for 3seconds confirmed with multimeter.

I just can't find the ground wire. Same problem as this guy:

https://www.youtube.com/watch?v=WGA9tUmX08I

Anyone know how I can confirm my ground is good to go?


Vehicle:

USA 1992 Suzuki Sidekick 4dr JX SUV
Auto Trans, 4WD
1.6L 16valve EFI engine