97 XL1200C Left Turn Signal

Hi all,
Perhaps this is related to my erratic speedometer, I'm not sure. I have NOT pulled the speedometer transducer and cleaned it yet, but now my left turn signal usually doesn't work. When I first start out, if i use it, it might flash 2 or 3 times. After riding for 5 minutes or longer, it no longer works at all. I replaced the bulbs, still the same symptom. If I am at a dead stop and hit the turn signal switch the indicator on the speedometer sometimes will flash dimmly for a brief time (have to watch closely to catch it). When I get home, I let the bike idle in the driveway while I open the garage door. Without shutting the bike off, I try the left signal and it usually works. Any ideas from you gurus out there? The indy shop i used to use closed recently and I really DON'T want to have to rely on the stealer for this one. Any suggestions are appreciated.

I haven't had much time to work on my bike, I still have a new enrichener cable I need to install and now the issue with the turn signal. If I have any free time, I'm riding, not wrenchin'. The turn signal thing though is a little higher priority with me; in FL, one needs all the help one can get to keep the cagers off your "six".

TIA,
Steve

Thanks Hotroadking,
I DO have a multi meter and a service manual. I know that intermittent problems are the absolute worst kind to troubleshoot. It very well could be a vibration "thing", maybe just sitting at idle is not enough vibration? I looked at the bulb sockets when I replaced the bulbs; had grease and no corrosion. Guess the next step will be putting the meter in (or turning the turn signal on) and wiggling all the wires.
Thanks

all else fails, yank'em all off and use your hand:roflmao: my 89 did the same kinda crap, never took the time to trace the problem, just yanked them off.