I have a 1993 Honda accord with 138.000 miles, I am recently experiencing some issues with it lately. The car would not start yesterday afternoon 102 deg. AZ weather (muggy) but started this morning @ 85 deg. I was at California over the weekend 95-102 deg. With no problems. Also the SRS has been coming on (when hot) and stays off when cold. Besides that my horn does the same thing, one day it will work, but most days not.
Is this a Main relay issue also or is it a wiring issue somewhere in my steering column?
My dome light also stopped working, but the door lights still comes on when you open the door.

. Start by replacing the main relay.
. Check all under dash and under hood fuses with a test light or multimeter.
. Check horn relay--may also be heat-related.