I have a 1985 300SD. The warning light for the Battery stays on all the time. The battery is new. The alternator is charging to 13.5- 13.8 volts. The Antilock and low fuel warning lights come on intermittently, off if I am accelerating, on if I am coasting. The Brake light and brake warning lights are dim, they go off after I start driving, however, they come back on dimly if I coast. The car seems to run fine. This problem started during a rain storm. And has continued for a couple of days. Any Ideas?