I have not yet installed my door open (aka door ajar) light however I have learned a lot about it…
A version of this light was an option on some poriton of (at minimum) 1965-1966 Mercury, Fairlane, Lincoln, Thunderbird, Hardtop, Town Hardtop, Landau, Convertible, Galaxie, 500, XL, LTD (no Comets). I know this because I stumbled upon the mechanical switch used in the door latch to activate the light (see
here). From there I was able to track down which cars had the switch as an option (or at least a lot of the cars that had it). (Unfortunately its probably super impractical to hack the switch into the Comet/Falcon door latches... and none of the other car's latches will work in the Comet... so I'm going to have to have my light switched by some other mechanism - most likely I will just put this on the door jamb plunger circuit, which is kind of lame but it covers 98% of the scenarios).
However I believe there was more than one bezel style for this light (so just because a car had the switch doesn't mean it had this exact light bezel). The light used on the 1965/6 Mercury was part C5AZ-13751-A and per the Master Parts Catalog was “Located on L. H. side on instrument panel for police cars only.” I believe that Mercury police car light was a different style than the one I have in my hand (I think it was more of a “button” rather than a “wedge”). My light is labeled as part C6OB-13751-A (printed on one of the wires) which indicates it was (at least) a 1966 Fairlane option. I don’t have a MPC for Fairlane so I can’t look it up to see if the installation location on the Fairlane happens to be illustrated. So I am still working on finding an illustration or picture, I may need to finally spring for the digital version of the full Ford car MPC.
Under dash courtesy lights: Others in this forum will know better… I would be surprised if your car came out of the factory with only one of those lights. The bracket/bezel is part COAZ-13763-A and can be sourced (such as
here – however keep reading).
The wiring for these lights was part of the loop that is switched by the door jamb plunger (wring is assembly part C5AZ-13A709-A). The MPC does get goofy about that assembly… with a note “…improvise from No. 18 gauge wire… and (1) bullet terminal and (1) socket for instrument panel courtesy light.” IMHO that note could not possibly be referring to the under dash lights because the socket for the under dash bulbs is NOT the same as the sockets for the instrument panel (I am looking at my wiring harness right now and I can see there is a huge difference in size). That said I don't know what light it IS referring to... so I'm kinda stumped on what exactly that note means.
Unfortunately it does not appear that the socket assembly itself was considered a separate part from that wiring assembly… however I am nearly certain that this same socket and bezel was used on the 1964-1969 Mustang et. Al. which, of course, means it can be sourced. The socket alone is available (such as
here) and the the bezel, socket assembly and wiring can be sourced as a kit by the same part number as the above only replacing the ending A with KIT: C0AZ-13763-KIT (such as
here).
no problem. Glad to help.