When you turn the key to the run position, does the jeep start? If not, do you have two wires coming off of the starter side of the solenoid? Are you still running the ford (fender mount) stolenoid, or is it mounted to the starter aka GM style? Sounds like you might have to break out the test light to see what's hot when.
'77 CJ-5: 304/T-150/D-20 F-D44 R-9" Power 4 wheel disk, 36X12.5 swampers