Left side blinkers work perfectly. Right side problem - When activated, the front and back right side lamps come on and the turn signal light comes on in the dashboard, but no blinking. I have resorted to turning them on and off manually to "simulate" blinking but this is not a good long term solution! Anybody had this problem before or have an idea how to fix it?

Since it seems the filaments are working, it sounds like a flasher problem....they are pretty cheap so try a new one....generally speaking when the stop "blinking' the flasher is shot....does sound rather odd that it's just one sided, but who knows....

Anothe note - the flasher on the fuseblock is not the one for the blinkers. My factory auto column shifter had the flasher as part of the NSS/backup light switch mounted on top of the steering column. Unplug the two wire plug on the right side of this switch and plug it into your new flasher unit.