74 Duster
There is a hole below the ballast resistor for the hood latch cable. From there it follows the wiring on the inside of the inner fenderwell.
I didn't have the correct grommet for the A.C. vacuum lines but I drilled a hole near the heater hoses and the A.C. lines to run it out there. I could not find a spot where it would have come out from factory. I never took mine apart.
Cley