Turn Signal Problem

My son’s 1997 Mitsubishi Eclipse has a major turn signal problem. The right turn signal blinks no matter what position the turn signal switch is in. If it’s in off or left position the right side keeps blinking- weird!

It’s not so weird. The turn signal switch is broken.

Does it continue to do it is you turn the lights, including the parking lights off?

Yes- if the ignition key is on or on accessory it starts blinking whether any other lights are on or not.

Sorry- I mean if the ignition is in the on position or the start/run position it blinks continually. If it is on accessory position it does not do anything.