'91 Taurus Intermittent Problems

My '91 Taurus has had intermittent problems with the "check engine light" coming on; however if I stop and accelerate, it usually goes back off once I hit 35 MPH. It is not showing a code. In addition, the newest twist is that my "air bag" light started flashing, but only while I was using my windshield wipers and I am (again) having a problem with the left-turn signal working/not working/working/not working lately. Today it was not working, and then the check engine light flashed on, but went off when I activated the right-turn signal. Any ideas to pass my way? I love my car, but it's making me nuts.

BAD GROUND IN YOUR WIRING
(tis my guess)
prolly in your steering column