NOS OEM GM 1998667  STOP TAIL BRAKE LAMP SWITCH Delco Remy D-868. 

Group # 2.447  GM Changed part number to 1993509

Correct for GM various years and models. 1958 to 1965 Chevrolet passenger cars, some trucks and some Corvairs.

Make sure you check your part numbers to make sure this is what you need.