I cleaned up the fuse box contacts and loaded it up with new fuses, no change. I would LOVE to have a schematic or something, or some troubleshooting tips. Im out of ideas. Can I jump a ground? where to on the cluster?

Forgive my ignorance but what/where is the OVP? the car starts and runs quite well, aside form some vacuum/trans shifting fine tuning shes quite roadworthy.

Car goes in tomorow for draglink and ball joint R&R, alignment and new tires. I must start driving it regardless of timely resolution of this problem. I wish I had a choice but I do not.