fast blinker
#3
Since it still works, haven't messed with it. I was told by a somewhat dubious source that it is caused by having the wrong type of bulb in it, that different resistance in the circuit is causing the issue.
#7
strange, maybe try switching the bulb out with a correct wattage one. The only time I've seen the signal blink fast is if there was reduced load on the circuit. That's one of the reasons I keep my signal bulbs from the bumper taped up under the truck. I'm too lazy to but resistors in and don't like the fast blinking if I pull them out.