[RockBit]

Most wiring harnesses are set up for separate right and left turn signal indicator dash lights. Cobras usually only have one indicator dash light that serves for both right and left turn signals.

If you have both right and left hooked up to a single indicator light on the dash, all four corners will flash if either right or left is on. You have to put diodes in the lines to the single indicator light so that one side won’t power the other.

I have seen this before on Cobras.

Good luck.