Help! Issue with car not starting...

We are doing a race build on a 1980 280zx. Part of the build is to install a kill switch that interrupts both the battery and alternator so that when you flip the switch the engine stops and all power is killed. Here is the part where you get to call me a bone head and where the problem stems from. As the car was running we clipped an ignition wire in the box just by the battery. The car stopped running. This is where we decided to put the interrupt, But as we were running out of work hours we decided just to splice the wire back together and test start the car before we went home. Of coarse it will not start. There is current at the ignition and plugs, the car turns over fine but it does not feel like its even try to catch at all. Could we have messed up the fuel injectors or messed with something in the electronics? Not to complicate things but there is a Code alarm installed. I called their techs this morning asking if the alarm would mess with anything other than interrupt the starter and they said no. I apologize in advance if this reading this causes you to slap your forehead and yell STUUUUPID!!