Volvo 940 and 960 instrument clusters suffer from printed circuit foil and solder joint troubles. I've had trouble with the ABS and Coolant Loss warning lights not working. The problem has been a break in the printed circuit track feeding those two warning lights. If your ABS or Coolant Loss light don't come on with the engine off and key in the run position, your car has this problem. 940s didn't come with a Coolant Loss warning light, but many of us have added them using the 960 Coolant Reservoir. Sometimes the Parking Brake warning light doesn't work in addition. The picture below shows three warning lights on the back of the cluster. Light 8 is for Coolant Loss, light 9 is for ABS, and light 10 is for the Parking Brake. The problem is the printed circuit track feeding lights 8 and 9 from light 10 will have a defect and not supply electricity. Installing a jumper wire from the solder joint just above lamp 10 to the printed circuit board a lamp 8 fixes the problem. It beats buying another instrument cluster that may have the same problem.