Check towards the bottom of this page - K6JRF Auto Page You might be able to fabricate the switch and LED device used to read fault codes.

If you're diagnosing an SRS light in a 92 300D, start with cleaning the contacts in the slip ring between the steering column and steering wheel.

The contacts on the column are the cluster on to the upper right -



The contact set can be replaced as this assembly with blue sleeved wires and red locking connector -



Sixto
87 300D