Check that you have 12 volts at coil (-) with the key On. If not, check coil (+). You should have 12 volts on both sides with the key On. If you have 12 volts at coil (-), then check the following:
There is a blue wire connected to the coil (-) post that runs through the harness to Pin #1. If you're not getting 12 volts at Pin 1 there must be a break in the circuit somewhere. Could be at the coil or anywhere in between.
77 still has the ballast resistor. I think that the blue wire actually connects to a post on the ballast that is also connected to coil (-). If you've messed with the wires at the coil and ballast, find that blue wire, check continuity (resistance) to Pin 1, then connect it to coil (-) of it's the correct wire.