95C280 various electrical issues (hopefully related)
 

I have a 95 C280 with the following issues (they all came up at about the same time)

1. Blinkers (turn signals) - well, they work sometimes and dont work other times...(This is my largest concern)
2. Ignition - occasionally it will not start. Dash lights, fan, etc. on...but no power to starter solenoid. Usually if I open and close the trunk it will start.
3. SRS light on dash comes on, then it turns off after 10 minutes or so. (Should I be more concerned here)
4. Radio stopped working

Other, longer standing issues include the center vent on the dash does not work most of the time. Every now and then, SURPRISE it works.

Thank you for you input.