1995 Ford Ranger Gauge cluster not working

I have a 1995 Ford Ranger on which most of the gauges of the gauge cluster do not work (tach, speedo, charging, fuel) but the temp (eng, oil) do work. They stopped working after my son replaced the main headlight wire harness (switch kept burning up, after market harness seemed to help). Unfortunately I have not been able to find a good circuit diagram for the entire switch. I have figured out some of it but again, I cannot seem to get all the gauges working. Anyone have a complete circuit diagram of the main headlight switch? Most books and internet searches only to have the headight circuit, perhaps the running lights.

I have replaced the instrument cluster with a newer one that looks OK.