What year 126?
The only "box" I can think of that resides under the ashtray area is the crash sensor for the air bags, and that is a sort of golden color.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.