fuel sending unit and fuel gauge trouble

ok guys so i crawled under there with the flash light and looks like there are no wires hooked up to the fuel gauge or the temp gauge... i found a wiring diagram online...looks like a wire comes off the voltage limiter, goes to one side of the fuel guage, and the other side takes the blue wire that goes to the sender, that should be pretty basic to do?
Did I not mention printed circuit boards and their contact pins in a earlier post? Your wiring diagram show current paths. Maybe someone could post a photograph here for you. I don't have. Anyway.... The gauges do have threaded mounting posts and nuts. The only instrument in the a-body panel that has wires directly attached to its mounting studs is the amp/ALTERNATOR gauge. Printed circuit boards conduct current to everything else.
And by the way, although one of those 2 wires with ring terminal is a black, it isn't a chassis ground wire. Both red and black are unfused firecracker hot at all times.