The following article actually part of 1992 Toyota Camry wiring diagram and electrical system manual. Herein you will find detail illustration/ pictures showing relay location in the engine compartment diagram of 1992 Camry.
The relays consists of ISC valve, igniter, ignition coil, in-air temperature sensor, injector, knock sensor, noise filter, oil pressure switch, oxygen sensor, radiator fan motor, solenoid valve, speed sensor, start injector time switch, starter, throttle position sensor, washer motor, vacuum sensor, and wiper motor.
Find more information about 1992 Toyota Camry Relay Locations in Engine Compartment here in page 9 – http://www.autoshop101.com/forms/92camry.pdf – free download PDF file. (source: autoshop101.com)