68 low fuel warning

[z28z11]

I think this has probably been answered 300 times, but I couldn't locate an exact answer when I searched. I disassembled my 68 Z console tonight, and found the gauge wiring to be completely intact, including the low fuel warning module. My questions - were all D55 gauge cars equipped with the low fuel module ? Or optional ? Is the indicator light on the dash panel or gauge package ? I was pleased to find everything there, and hooked, although I was bummed to find the console itself looks like the aftermath of the Siege at Leningrad. Everything that can be broken is broken, with the (thankful) exception of the gauge package.

Now all I have to do is restore it - the work never ends.