Author Topic: Underdash courtesy light bulb wattage  (Read 1568 times)

Offline Josep

  • Sr. Member
  • ****
  • Posts: 441
Underdash courtesy light bulb wattage
« on: December 24, 2015, 02:54:34 AM »
Hello all,

I'm trying to find the correct underdash courtesy lights wattage for my 200 Coupe '66.
The shop manual says 6C (candelas or candles) model num. 631
Have looked through Internet to convert candelas to watts but a strange (hi!) formula appears there.!
I also read somewhere that they originally had 8.8W bulbs.
What I have now is 5W bulbs in there, do I have to look for a higher wattage bulbs.?
Can someone guide me through..? Thanks!
1966 Mustang Hardtop 200 Inline 6 - Arcadian Blue - C4 - Thermactor - 6R07T213966 - San Jose projected build date June 11th 1966 - DSO 71
1966 Mustang Convertible 289-2V - Vintage Burgundy - AT PS DB - 6F08C109403 - Dearborn projected build date September 9th 1965 - DSO 36

Offline Brian Conway

  • Hero Member
  • *****
  • Posts: 1623
Re: Underdash courtesy light bulb wattage
« Reply #1 on: December 24, 2015, 10:52:08 AM »
google GE 631
5RO9A GT  4 Spd Built 5/29/65
9TO2R SCJ 4 Spd Built 9/19/68
Owner Driver Mechanic
San Diego, Ca.

Offline Josep

  • Sr. Member
  • ****
  • Posts: 441
Re: Underdash courtesy light bulb wattage
« Reply #2 on: December 24, 2015, 01:55:18 PM »
Thanks Brian, will find some of them.!

Happy Holidays.!
1966 Mustang Hardtop 200 Inline 6 - Arcadian Blue - C4 - Thermactor - 6R07T213966 - San Jose projected build date June 11th 1966 - DSO 71
1966 Mustang Convertible 289-2V - Vintage Burgundy - AT PS DB - 6F08C109403 - Dearborn projected build date September 9th 1965 - DSO 36

Offline jwc66k

  • Hero Member
  • *****
  • Posts: 7308
Re: Underdash courtesy light bulb wattage
« Reply #3 on: December 24, 2015, 01:55:32 PM »
Hello all,

I'm trying to find the correct underdash courtesy lights wattage for my 200 Coupe '66.
The shop manual says 6C (candelas or candles) model num. 631
Have looked through Internet to convert candelas to watts but a strange (hi!) formula appears there.!
I also read somewhere that they originally had 8.8W bulbs.
What I have now is 5W bulbs in there, do I have to look for a higher wattage bulbs.?
Can someone guide me through..? Thanks!
The UL-631 lamp is rated at 14V, 0.63A, which (by the wattage formula, P=IE) comes out to 8.82W. I had a problem in fitting some replacement UL-631 lamps as the metal base was tapered out at the transition to the glass and would not fit easy. With all the green panic throughout the world, incandescent bulbs are getting difficult to find, so if you find a source, buy extra.
Jim
I promise to be politically correct in all my posts to keep the BBBB from vociferating.

Offline 196667Bob

  • Hero Member
  • *****
  • Posts: 1050
Re: Underdash courtesy light bulb wattage
« Reply #4 on: December 24, 2015, 02:17:45 PM »
Josep : I know what you are saying. All of the MPC's give Applications, numbers and candle power, but not wattage. Wattage of course is a good indication of heat generated, which of course can be important for distortion of plastic lenses.
Here is what I have done, which I believe is the easiest way : go to "Bulb Town" site; in the upper right is a search box; enter the bulb number you want to find out about, and wallah, there is all of the information you'll need.

Hope this helps (and it's easy).

Bob
1966 Coupe, C Code, 3 Sp MT, 6T07C154XXX, Build Date 11/22/65
1967 Conv, C Code, C4, 7F03C154XXX, Actual Build Date 01/31/67
MCA 04909

Offline Josep

  • Sr. Member
  • ****
  • Posts: 441
Re: Underdash courtesy light bulb wattage
« Reply #5 on: December 27, 2015, 06:25:33 PM »
Thanks Jim and Bob for your posts.!
I can get incandescent bulbs here, on the island, easily !! But wanted to get the originals 631.! I have ordered a pair and soon I will have them here.
I will visit thi site to check bulbs Bob, thanks for info.!

Kind regards guys.!

Josep
1966 Mustang Hardtop 200 Inline 6 - Arcadian Blue - C4 - Thermactor - 6R07T213966 - San Jose projected build date June 11th 1966 - DSO 71
1966 Mustang Convertible 289-2V - Vintage Burgundy - AT PS DB - 6F08C109403 - Dearborn projected build date September 9th 1965 - DSO 36

Offline ChrisV289

  • Hero Member
  • *****
  • Posts: 1965
Re: Underdash courtesy light bulb wattage
« Reply #6 on: December 28, 2015, 04:40:47 PM »
Might want to also check out this thread as well if they don't fit:

http://www.concoursmustang.com/forum/index.php?topic=9819.msg57999#msg57999
Chris
1965 Honey Gold Fastback (SJ 10/29/64)
1965 Caspian Blue Fastback (SJ 06/03/65)
2009 V6 Mustang Coupe