Hi. I was driving my '94 Volvo 940 (non-turbo) along the highway, and heard a noise that sounded like I had ran over some small debris on the road. When I looked in the rearview mirror, I didn't see anything on the road. However, all the lights on my dashboard came on, as if the car was on accessory. The motor was still running and I drove it home without any problems. All the warnings lights stayed on the whole time. After I got home, I restarted the car later, and get the same thing. It appears to run fine, but all the warning lights are lit on the dashboard. So I am cautious to drive the car. Does anyone recognize this problem? Thanks.