Hello third gen community!

Here's the rub. My 88 Firebird won't crank or start. Car has new alternator, new battery, new starter, and new battery cable. Also lost dash lights but headlamps still light up.

Context: I replaced my clutch in June of this year. I was able to start and drive her onto ramps to do the repair. When clutch replacement was complete, I had no crank, no start condition.

I'm not very good with electrical, but I've had a few people put the problem between negative side of starter and ignition. I trust both guys who already diagnosed.

I need help finishing the diagnosis and getting her fixed. Is there anyone in the Detroit area who could commit a day or so to wrenching with me? I have 3 very young kids and a fill time job so I don't have much time or money but the beer and pizza is always on me. I haven't driven her since February 2016 and really, really, REALLY want to get her back on the road. Let me know if you'd like to help!

I should probably add the specs:
305TPI, T5 manual trans, 3.70 9-bolt rear end. Car is mostly stock.

I believe there is a switch that the clutch pedal hits when pushed to the floor. My Z28 won't start unless the clutch is in. I can turn the key without hitting the clutch and it will do just about everything it normally would do except crank the engine. So make sure that is working since you were doing clutch related work.