Power from Taillight is wired to fuel sending unit... Check!

Thank you both for the electrical diagram. That helped a ton. And now I know why I failed electronics 101.

The the headlights aren't wired to the fuel sending unit... The fuel sending unit is grounded at some point and completed the circuit. I have 3 out of 4 taillights working now, I'm missing the passenger side taillight receptacle that plugs into the taillight wiring harness. I'll be crafting something there.

To get brakes and turn signals working I've have to hook up the steering wheel from the 74 to the 65 darts dash wiring harness.

The 74 power wagon steering wheel has two sets of wires coming out of it. One with 9 wires and one with 6 wires (larger diameter than the other set of wires). I don't know which does what, but all I see from the car is a block of 8 wires with 5 plugs. I think I need to find me a schematic for the 74.

I'm out of time this weekend, so next weekend I'll have to play with it some more. First thing I'll do is trace the fuel sending unit wire up to the dash.