Gauge cluster not working, shift interlock will not release?

I have the car listed above with the dreaded headlight/DRL buzz, headlight burning out on the regular. For the last few years, I just kept the #12 fuse (under dash, DRL) pulled. No daytime running lights, and no right-side high beam, but no big deal, since it was an "emergency only" vehicle, and spent most of it's time parked. Anyways, I recently re-insured it fully and was informed I would need it inspected, considering the age, and the fact I'd had it on only park insurance for a few years. I tried tracing down the buzzing relay behind the glove box, by the main relays, and in the process, I must have bumped something or knocked something loose. Right now, she starts, idles, and drives great. Except I have no speedometer, no tachometer, no odometer/trip meter readout, no MIL (which is normally lit due to the downstream O2 sensor needing replacing), and the security led (flashing orange/red) doesn't turn off when the car is running. Also, the shift lock is engaged, making it impossible to shift out of park without pressing the override. The brake lights work, and signal lights, basically everything, except a good chunk of the cluster not working and the shift lock. It was all working before I started poking around. The only relays I actually fiddled with were the main PGM-FI relays, and that was only to drop the support they're mounted on, so I could see the rest clearly. I'm stumped. I've checked all the fuses I could find on the wiring diagrams in my service manual that might apply to the drive circuit, and they're all good. Any ideas?