93 100 Bentley answered

[Nick Lawrence]

Thanks to those that responded and Thanks to Jim in New Jersey (I think) for spending time  on the phone with parts list and manual.
 I had gone to the dealer to get a back up light switch for a 93 100. I had already peeked at etka, same number. When I got the switch and was under the car I could find nothing that looked like the dealer part.  
Consulted all-data at the library and the picture there matched the part on the car I figured to be the switch. Although the p/n noted there was same as dealer part.
Jim found what Iwas looking for and it's name is multi-function switch.  
The local dealer (Byers Audi) took back the wrong part and even had the correct part in stock.
Nick