Turn signal problems

Drove down to Nuevo Laredo Mexico today. Lots of speed bumps and NAFTA traffic jams down there. One hour on bridge trying to get back to US. The Rotweiler and German Shephard drug sniffing dogs sniffed and went on by without peeing on Fuchs. On the way home played tag with a shiny red Z3 with Austin dealer plates (probably one of those broke dot com millionaires hiding from IRS in Mexico). The old guy had the top down in Z3. My top was off. Used signals a lot when playing tag with Z3 through the Nafta trucks Both turn signals indicators lit up
and stayed on intermittantly. The signals worked for a while, but stopped blinking. I am getting a buzzing. Where is the turn signal flasher on my 80 SC Targa.

Behind the panel, under the front hood. About where the fuel tank gauge is. It is rectangular relay, black.
John 79 930