NON WORKING GUAGES ( can anyone answer this) on 1990 Jeep Cherokee

i have a 89' laredo none of the guages work such as rpm, oil press, temp, volts only guage that works is speedodmeter took out guage panel no broken wires or nothing checked blade fuses. Any help would be appreciated someone pleas help

Asked by for the 1990 Jeep Cherokee
The problem may be in the wiring from the power source to the Instrument Clusters connector. Check continuity of all wires at the connector and at the Bulkhead connector (firewall). If all of these are ok, I would suspect a defective printed circuit board on the cluster.
could there be a relay and if so how do i check not in manuel