[OrrieG]

I thought the after market ones had a flasher in the signal assembly? Maybe you have it wired thru the flasher on the fuse panel and the double flasher is causing the blink? Flashers are capacitor, putting them in series would just change the charge/discharge time if I remember my electric 101 right. Have you checked to see if your tail/brake lights are blinking at the same time?? Or is it just the indicator light. If its related to engine rpm then it might be some kind of feedback through the charging circuit? Is the charging signal light or guage wired to the same circuit as the turn/brake??