No Juice???

It's been a long day and still no juice? Quick background...72 Dart has been up on jack stands since July (it ran then). I mini tubbed and put in a new rear and patched the floor pans (didn't mess with any juice at all). The battery was already located in the back by previous owner but no master kill switch. So today I decided to install a master kill switch and some remote jump posts. After re-routing all the cables nice and pretty with clamps etc. the Dart won't even try to turn over. I get absolutely no juice to the car. So I disconnected the main starter wire from the kill switch and hooked it directly to the battery and ran neg to the ground (also tried jump box) and nothing. Now this was just like it was before I did anything and I get no juice. I shot the wires from the battery to the switch and I have juice. So I hooked the jump box directly to the starter and grounded it to the frame and still nothing. Should I start looking at an ignition relay, the ignition, or what here? P.S I'm glad I took a break and decided to come visit in here, I get inspired when I see all the mopars that run. Just wish I could get mine to that state. Oh yeah, my grounds all are cleaned down to bare metal. I first thought it wasn't grounded properly.