rebuilding an xs650 from frame up..kind of a frankenstein type bike. wiring harness from a 77xs & controls (switches) from later model (80 on)...78 frame & 74 motor etc. anyway I have checked & triple checked the flasher, turn signal switch, signal canceler, bulbs, grounds, interchanged all of the parts w/ parts off my 80 xs650 that work. still no luck. the thing is when I tap the flasher unit on the frame of the bike I am building it will flash as long as I keep tapping. Any ideas ??? thanks XS Woody