Thank you for the info which was very helpful. I assume from the diagram that I can simply tape off the 8th wire (red with green tracer) if I decide not to use the 4-way flasher feature, right?

Two 1957 Chevy Step Sides
1988 Fiero Formula
1987 Fiero GT
1984 Fiero Indy
... yes I like Fieros also..
;-)