Best I can do is look in the 1986 TR OM (456-86). Right fuse box #4 is a 15A fuse for hazards, but as it also services the headlight pods, clock, and parking lights, it is unlikely you would have missed them going out also. And there is NO flasher relay exclusive to hazards. That leaves the hazard switch which is often 'age-flaky' (a technical term I just made up) needing contact juice such as Stabilant 22A. GL
Thanks for the reply Paul, I checked the fuses and relays etc. I also suspect the flasher switch. I sprayed electrical contact cleaner in but no change. Suggestion on different cleaner? Ago