A few weeks ago, over on VMF, questions were posted in regard to the Lens colors and type of Bulbs used in the 1967 Safety Convenience Panels. After doing some research in my resources, I replied with the following information. Since we have a pretty good thread here already, I thought it would be good to add to it with what I found.
According to the 1960-68 MPC, which has revisions from 1967 and 1968. the PARK" lens was "RED" for both early and late 67's. The "BELT" was also "RED" both early and late. Prior to 12/01/66, the "FUEL" was "GREEN" and the "DOOR" was "BLUE". Between 12/01/66 and 5/15/67, the "FUEL" and "DOOR" were both "BLUE". After 5/15/67, all lenses were "RED".
As far as the bulbs go, I have heard separate comments that the "FUEL" and the "DOOR" both used "flasher bulbs". Hopefully, the following will “straighten” this out :
The 1967 MPC - the bulb section shows nothing for the Safety Convenience bulbs.
The 1960-68 MPC, however, gives a good history :
Low Fuel and Seat Belt Warning - Prior to 9/06/66 # 1891 (14 volt, elongated glass, 3.4 watts ); after 9/06/66, # 1445 (14.4 volt, round glass, 1.87 watt. I believe that this change reflects trying to reduce the melting of the lenses by using a higher voltage, less wattage bulb, plus "moving it slightly farther away from the lens by using the round bulb instead of the elongated one.
Door Ajar and Parking Brake Warning - No changes are shown during production year. Bulb # 256 (C4SZ-13466-A) is specified. This is a 14 volt, 0.27 amp (3.8 watt), elongated glass, flasher bulb. Apparently since it was a flasher and not on constantly, Ford felt there was no reason to go with the round glass version like they did for the Low Fuel and the Seat Belt Warning. If you are concerned, the round glass version is # 257. However, I would first check to be sure it fits into the opening provided for the elongated # 256 bulbs.
The 1965-72 MPC “mirrors” what is shown in the 1960-68 MPC.
I also decided to check other resources that I have, and here is what I found :
1) The Electrical Assembly Manual - No Listing of any Bulb #'s.
2) Shop Manual (First Printing - March 1967) - For "Warning Lights, Panel, or Lamp Kits", only notes Seat Belt Warning Light ( # 1891) and Parking Brake Warning Light (# 257).
3) Service Specification Booklet (First Printing - August 1966) - Same as Shop Manual except shows # 251 instead of # 257 for Parking Brake Warning Light (this is obviously a misprint as a # 251 is a "miniature flange base bulb", and would not fit).
4) Owners Manual (First Printing - August 1966 Printing) - Shows for "Safety Convenience Package", 6 (?) - # 1895 bulbs are required. I can understand the #1895 changing to a # 1891 (the # 1891 has less wattage, thus less chance of melting the lenses), but "6 required" ?
Personally, with all of the apparent confusion/ indecision, I would rely on what is shown in the 1960-68 MPC (as maybe they had figured it out by then) :
# 1445 for Seat Belt Warning and Low Fuel
# 256 for Door Ajar and Parking Brake Warning
Hope this has been "enlightening".
Bob