Hey y'all. Trying to track down a wiring issue on my 74 Barracuda after leaving the key in the run position by accident for at least 3 weeks. I went to move the car and found it, tried to start it and no go. Turns over but no spark with the Mopar msd 6al box. I tested the box and its good. For some reason when I rewired the engine bay of this car years ago I triggered the msd box in run off the oil pressure/gauge terminal, position 17 (g6?) in my bulkhead. I deleted all the unused circuits then and must have used it considering it was a free keyed 12v source? I also left the ballast for whatever reason. Anyway, Im sure I could trigger the box there but I really would like to know what I burned up leaving the key on. No blown fuses, no obvious burnt wires that I can see crawling under the dash. There is no power on the inside at the bulkhead on #17 either. I tried to track the circuit in a service manual but I don't totally understand where this goes, how it works. Anyone out there that can read wiring diagrams better than me and can explain it to a moron?

At first I thought it was ignition switch related but everything seems to be doing its job there. Non rallye cluster, no oil gauge etc

Thanks!