[dookie]

So i am in the process of installing all of my new gauges , and i was checking for which wire was which on my factory plug , and just about had it all figured out , i had the new cluster laying in my lap , My fuel gauge was working correctly , but my tach would not , i got irritated with it all and pulled the whole thing out and took it back to the lab .. (the kitchen table ) , took the tach out to my car and got it figured out all by itself . Was pleased with this , so i took it back inside and reassembled it into my cluster and into my sea of wires ... took the whole thing out and just before pushing it all into its final resting place i decided to turn my ignition back on and just double check everything, now the tach is working fine , but my fuel gauge isnt doing anything . could i have somehow grounded the sending unit wire out and messed somthing up ? I cant find a blown fuse anywhere ....

Cliffs : i think i may have somehow grounded out my fuel sending unit wire, because now it wont work , it worked before i started changing out my gauges.... HELP!

73 z28 , and all autometer gauges...