You can use the 3 terminal flasher, just leave the P terminal unused, or as Bill said, route it to a pilot light that will flash to tell you the turn signal is on.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.