Great, now there are two messages....

Okay -- I've got a 68 145. Mostly I don't drive it because it only has
2 gauges, a broken mechanical temp gauge and an amp meter. Oh, and a
generator light but no oil pressure light.

I put on a known good oil pressure light and a temp sending unit and
replaced the gauge cluster; I also took out the dash mounted tachometer,
amp meter and all the other weird looking wires under the dash.

I must have taken out something important, though, because now the car
gets no power to anything when I put the battery back in. None to the
lights, nothing.

The car has the usual heavy gauge wire from the positive on the battery
to the starter then a much smaller wire from a terminal on the starter to
a bit of the wire harness. Is this the only source of 12v to the rest of
the car?

I assume I need to poke around with a test light to see where the 12v
stops, correct? The car has a delco alternator and some funky wires and
a delco relay looking box in the engine compartment.

I should (but don't) have anything better than the hayes manual and I
haven't seen that since my most recent move.
chris