So now what? Pull the dash out and replace the harness. Put a factory processor back where it goes? Cluster fuchs are just that. I know because I have a 69 G code that has had extensive modification. Thank god there is only 17 wires in my main loom. You can probably still get a new harness. Otherwise marry your DVOM. Buy new old stock wire from the USA to repair your harness. Put the processor wherever you please. A lead lined box maybe