Can anyone confirm that the Rear Courtesy Light Bulbs in a 1975 Olds Delta 88 Convertible are either 89 or 906 style? Unsure based on the manual. These bulbs are on the corner by the door jam just below the arm rest in the back seat. Thanks for any help.

 

Seems like my 73 used 89.

The chassis manuals are also vague. FB manual wiring diagram shows only that it is a double contact bulb and I think an 89 is double contact.

Be careful prying those lenses out. Fusick has reproductions if you end up busting one.

 

The '73 CSM does say that interior courtesy lights are #89.

 

Thanks very much