Honda 1993 Accord Coupe Owner's Manual page 69

Both front seats in your car are equipped with seat heaters. The
ignition must be in the ON (II) position when using the seat heaters.
Push the seat heater switch, the fight in the switch will come on and
remain on while the heaters are working.
To turn the system off, push the switch, the light in the indicator
should go off.
CAUTION:
As the unit draws considerable current, it should not be used
when idling for an extended period of time. Doing so can cause a
weak battery, resulting In hard starting.
INDICATOR LIGHT
Seat Heater (Canada: SE)
SEAT HEATER SWITCH