Up for sale is a saab  9000 Headlight relay. This is the primary cause of non working headlights in a 9000 Saab.  This unit, functions as the bulb check relay, and passes current through in order to power the lights.  If this relay is defective, the current pass-through will not happen, typically intermittently, which will cause intermittent headlight non function, on one or both sides.

This is a good used unit for sale here!