This , specifically the threaded part that goes thru the hole in the dash is a different size , you can't put a 69 switch into a 68 dash without making the hole in the dash frame , and subsequently the lower dash pad , larger. There is a difference in the wiring also , the 69 has 1 more wire than the 68 ? I've owned both years, parted a few, and played around with the switches at one point.