Steve. I printed a page from the WSM Chapter M-component location for reference. It shows a relay located behing the glovebox on LH cars. There are 3 relays grouped together, Lo washer fluid, Panel lamp (its in the middle), and interior light delay. Engine overhead buzzer is grouped there also.
Maybe short the overheat sensor in the block to locate this grouping. There is also a "panel lamps unit" within this group.
1980 SWII LRL-41587C FInj
1976 SS LWB LRE-23114 Harkness RR