For the past two days my left signal light comes on all by it self. Has anyone had a similar problem. Thanks for your help in advance.

Ride Safe...

 

Front or rear? Have you done any modifications to it or had modifications done to it?

 

I believe it's both front and back left signal lights. As for mod's. The only mod is tinted covers front and back and amber build on the front.

 

Sorry I miss read your original post. I read it on as off... like it fell off you bike. Does it turn off when you hit the switch?

 

Looking at the wiring diagram the turn signal is a pretty basic circuit. Switch, Rear tail light, instrument panel, front and rear signals. A left side narrows it down even further. I would guess a short and it would probably come on when doing something out of the ordinary. Bump, sharp turn, slow tight turn, quick stop ect.. Check for exposed wires near the front and rear signals as it sounds like this is the only place you have 'messed' with recently and that your new bulbs are securely seated in the socket

 

A short bulb would stay on all the time. There is a condition imitating depressing the switch TSSM reads as "time to turn". Check turn switch.