Lesson #1... Do not EVER trust electical work done by previous owners.
Problem: The ground was hooked up to the window motor wire, the "hot" wire was grounded. This allowed the lights to work, but the tach did not get power.
----------------------------------------------------------------- For future reader's referance:
My system's hood tach, working with an HEI distributor, is wired with a three wire system.
Hot wire: To the window motor's power.
Ground wire: Grounded to the firewall.
Distributor wire: Attached to the "tach" plug on the distributor. -----------------------------------------------------------------
Now on to the window motors... :P
The Bird Man, My Bird: 1969 T/A convertible tribute, 455 w/TREMEC 5-speed. Moder, not a purist... but I love that classic T/A look!