The relay is located in the drivers side kick panel, large relay.
The smaller relays are sunroof and fog/driving lights, 91+ models have the gear select lighting relay here too. Earlier models have it located under the center cubby.
If you look in your Bentley manual, you'll clearly see how the circuit works and what other components are involved.
Surely you must own a Bentley manual with the 2 classics you own right?
Or you have the free Rave cd, either way the info you need is in both resources.
Circuit path: Flasher relay, hazard switch, turn signal switch.