1993 940t wagon. This car had minor left front damage when I purchased it, the airbags did not deploy and there are no issues with the seatbelts. The SRS light is on and won't go off. I attempted to reset per the FAQ with no luck. The car in general throws no codes per the diagnostics, but when diagnosing the SRS system I get the 1-1-2, which according to the FAQ is "internal fault in the sensor unit". From reading through the archives I assume I need to replace the crash sensor and power module. Is this correct?

I understand the crash sensor is underneath the drivers seat, i've been wanting to pull the front seats anyhow to do some cleaning and other maintenance so no biggie, but what is the power module? Is this referring to the black relay looking box plugged in and mounted on the drivers side fender towards the front, or is this something else underneath the seat associated w/the sensor?

Finally, assuming this is my problem does anyone have a line on a reasonably priced sensor/module. Thanks in advance.