12 volt replacement stop/tail light bulb

12 volt replacement stop/tail light bulb

Joined: October 13th, 2014, 3:39 am

June 19th, 2017, 3:36 am #1



My 1948 M5 has original NACO tail lights that use a standard 6 volt 1154 bulb described as a Ba15d base, dual filament, S8 glass size. I have another pair of NACO tail lights that I will install on an antique utility trailer that I am refurbishing that needs to be 12 volt. I've looked at dozens of websites but have found nothing that has the bi-pin configuration of the original but is 12 volt dual element for tail light/stop light use. Does anybody know of a lamp with the vintage bi-pin Ba15d socket that is dual element at 12 volts?
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Joined: October 12th, 2014, 4:39 pm

June 19th, 2017, 3:43 am #2



#1157
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Joined: September 2nd, 2015, 8:33 am

June 19th, 2017, 6:55 am #3

I just recently refinished my NACO lights and had to get 12 volt bulbs for then, those are the correct bulbs
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Joined: October 13th, 2014, 3:39 am

June 19th, 2017, 3:18 pm #4


... Been working on this for awhile I finally figured it out this morning. The original tail light sockets are a type Ba15D which describes the opposing symmetrical (vs off-set) pin configuration of the Studebaker (Mazda brand) original 1158 bulbs. See page 92 of the M series parts manual. Turns out the correct 12 volt upgrade tail/stop lamp is an 1176. This lamp has the same dimensional specs as the 1158 but is 12 volt. Check out this O'Reilly Auto page. http://www.oreillyauto.com/site/c/detai ... &ppt=C0010

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Joined: September 2nd, 2015, 8:33 am

June 19th, 2017, 7:46 pm #5


My 1948 M5 has original NACO tail lights that use a standard 6 volt 1154 bulb described as a Ba15d base, dual filament, S8 glass size. I have another pair of NACO tail lights that I will install on an antique utility trailer that I am refurbishing that needs to be 12 volt. I've looked at dozens of websites but have found nothing that has the bi-pin configuration of the original but is 12 volt dual element for tail light/stop light use. Does anybody know of a lamp with the vintage bi-pin Ba15d socket that is dual element at 12 volts?
my NACO lights required the bulbs with the offset pins which would be bulb 1157 , glad you were able to get it figured out.
this is one of the sites i check if i need to get some info on bulbs
http://www.bulbtown.com/default.asp
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