I just went fishing for threads on blinkers, and I'm guessing that my problem is the same as yours, though the symptoms are different. Since I probably won't get time to look at it for a couple of days, i thought i'd post the symptom and see if anyone thought i was barking up the wrong tree.

When I turn the right blinker on, it doesn't blink. The left worked fine. I'm not sure what made me do this, but i tried turning my headlights off, and the blinker started to work fine (headlights off or parking lights on, and the blinker blinks). As soon as i turn the headlights on, no right blinker. Hazards worked fine. No more right turns at night.

99' ranger.

thanks,
steve