As others have mentioned the standard courtesy lights for 67 convertible were two under dash lights, and the rear console light just under the ashtray on the console. The Lighting group option added the Glove box light, the under hood light and the trunk light.
courtesy lights for the standard package can be found in most all of the repro parts houses. Ames, Classic, Y/O etc.. the Glove box light is also readily available. The undfer the hood and the trunk light can usually be found there too, or they used the same lights for many models and years up through the early 70's... so you can always find one on ebay! But make sure you know just what you are looking for, as the sellers descriptions are not always accurate!
I just need to replace (find) the under hood and trunk lights yet myself... but that is way dow the list and usually something I look for over the winter when I'm not working on other things on the car...
(In 68 they added the dash ashtray fiber optic light and the ignition light and eliminated the rear ashtray and rear light on the consoles)
I can take and send picures of locations and placement of the courtesy lights if you need?