I have a 92 S350. When I use the wipers or turn on all the interior lights in the car the dash lights will flash on once and then the seatbelt light flashes. Replaced turn signal switch same problem, replaced both relays and lamp control module, still same problem. I am thinking it may be a ground problem. But where. Also I am getting a puddle on the ground the size of a cd only after I drive the car, park it and shut it off. I will come out later and see the puddle. Replaced tranny cooler lines. still have same problem?