Author Topic: Courtesy Light bulb - 631  (Read 2175 times)

Offline ChrisV289

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Courtesy Light bulb - 631
« on: November 20, 2014, 08:55:13 PM »
Has anyone else run into the issue of these light bulbs not fitting correctly in the courtesy light housing under the dash?  I finally took a nail file and filed off a little bit of the lip where the glass on bulb goes into the brass housing on the bulb itself...
Chris
1965 Honey Gold Fastback (SJ 10/29/64)
1965 Caspian Blue Fastback (SJ 06/03/65)
2009 V6 Mustang Coupe

Offline midlife

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Re: Courtesy Light bulb - 631
« Reply #1 on: November 20, 2014, 09:13:30 PM »
There was a post about this exact issue on this site a few months to maybe a year ago.  I found it!

http://www.concoursmustang.com/forum/index.php?topic=7418.msg42067#msg42067
« Last Edit: November 20, 2014, 09:16:49 PM by midlife »
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Offline C5ZZ

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Re: Courtesy Light bulb - 631
« Reply #2 on: November 20, 2014, 09:23:52 PM »
I ran into this problem on my car also, the bulbs from the auto parts store
have a lip which interferes with the prongs on the socket, I was able to
find a few good original bulbs on some extra harnesses I had but maybe
you could try to slightly bend the prongs to make clearance.
MCA # 00945

65 Fastback, 6 cyl, AT, AC, PS, PB
Rangoon Red/Red Interior

Offline ChrisV289

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Re: Courtesy Light bulb - 631
« Reply #3 on: November 20, 2014, 10:59:27 PM »
Tried to bend the prongs a little bit but then the housing won't mate with the bulb socket if you separate it.  Read the original thread on it, and wish someone would fix the issue already but the bulbs are made in China...
Chris
1965 Honey Gold Fastback (SJ 10/29/64)
1965 Caspian Blue Fastback (SJ 06/03/65)
2009 V6 Mustang Coupe

Offline C5ZZ

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Re: Courtesy Light bulb - 631
« Reply #4 on: November 21, 2014, 10:24:49 PM »
Tried to bend the prongs a little bit but then the housing won't mate with the bulb socket if you separate it. 

Once the socket is snapped in place then try bending the prongs a little for clearance.
MCA # 00945

65 Fastback, 6 cyl, AT, AC, PS, PB
Rangoon Red/Red Interior

Offline TLea

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Re: Courtesy Light bulb - 631
« Reply #5 on: November 28, 2014, 08:36:40 AM »
The way I fixed the issue (I use a lot of 631, 1004, 1157 etc) is go on Ebay and buy a pack of vintage bulbs. The are under Tung Sol, Wagner, GE, Fein etc. Just look for brass bases. Usually you can get a 10 box for 10-15 bucks
http://www.ebay.com/itm/2-pack-General-Electric-631-Under-Hood-Bulb-Lamp-Multi-Use-Auto-light-/141462943557?pt=Motors_Car_Truck_Parts_Accessories&hash=item20efd93745&vxp=mtr
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Offline Brian Conway

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Re: Courtesy Light bulb - 631
« Reply #6 on: December 02, 2014, 12:51:45 AM »
Ordered the GE 631 bulbs and got them today.  4 bulbs, brass bases, in the GE 2 bulb packages, $10 and they fit my 65 just like the originals.  Thanks TLea.  Brian
5RO9A GT  4 Spd Built 5/29/65
9TO2R SCJ 4 Spd Built 9/19/68
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Offline DKutz

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Re: Courtesy Light bulb - 631
« Reply #7 on: December 02, 2014, 01:32:30 AM »
Had The same issue.  I bent the tongs
1965 Mustang Fastback 'A' Code, silver Blue Met, Med blue int. Auto, San Jose, 10/8/64 #1449**

Gone but not forgotten - 1996 Mustang GT