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Bulbs by Base:

Bayonet Based bulbs
Light bulbs specify Bayonet Bases by size, contact points and side pin orientation. Listed here are BAY15D, BAZ15D, and BAU15S Based bulbs. Size always refers to the diameter of the Base in Millimeters. A BAY15D Base is 15mm in diameter, has dual contact points on the bottom of the base and the side pins are not parallel to one another and oriented 180 degrees apart.


Remember: Volts X Amps = Watts.
1) Identify your base
2) locate the proper voltage. Voltage does not need to be exact. Many Automotive bulbs are 12.8 even though a car battery is only 12 Volts. Virtually all household bulbs using Wall jacks (110 Volts) are rated at 120 Volts or 130 Volts. A bulb rated slightly higher than the power source will last longer.
3) Locate the correct Amperage. If you cannot locate the exact amperage marked on your bulb find the next closet value. Selecting a slightly lower amperage will result in a slightly dimmer bulb while a higher amperage will result in a brighter bulb.
4) Select the correct shape and size glass. Unless apperance is important the only requirement for glass shape and size is that it fits (excluding floods, spots or focused beam lights).


BAY15D: Base Diameter is 15mm

BAY15D BAY15D


Bulb #
Volt Amp
Watts
Glass
More
 25T8/DC/24V 25 WATT T8 BAY15D BASE - 25 Watt 1.08 Amp T8 Clear Double Contact Indexed Bayonet (BaY15D) Base 24 Volt, C-8 Filament Design, 2.65" Maximum Overall Length, 1" Maximum Outer Diameter (25mm).
25T8/DC/24V 24 1.08
BAY15D
T8
#198 MINIATURE BULB BA15S BASE - 12.8/14.0 Volt 2.25/0.59 Amp S8 Double Contact (DC) Bayonet (BAY15d) Base, 32/3 MSCP, C-6 Filament Design. 1,200/5,000 Average Rated Hours,  2" Maximum Overall Length. #198
#198 12.8/14.0 2.25/0.59
BAY15D
S8
 #198LL LONG LIFE MINIATURE BULB BAY15D BASE - 12.8/14.0 Volt 2.25/0.59 Amp S8 Double Contact (DC) Bayonet (BAY15d) Base, 32/3 MSCP, C-6 Filament Design. 2,400/10,000 Average Rated Hours,  2" Maximum Overall Length. #198LL
#198LL 12.8/14.0 2.25/0.59
BAY15D
S8
 #1016 MINIATURE BULB BAY15D BASE - 12.8/14.0 Volt 1.34/0.59 Amps S8 Double Contact (DC) Index Bayonet (BAY15d) Base. 21/6 MSCP, 300/1,000 Average Rated Hours 2.00" Maximum Overall Length #1016 12.8/14.0 1.34/0.59
BAY15D
S8
 #1034 MINIATURE BULB BAY15D BASE - 12.8/14.0 Volt 1.80/0.59 Amps S8 Double Contact (DC) Index Bayonet (BAY15d) Base 200/5000 Average Rated Hours 2.00" Maximum Overall Length #1034
#1034 12.8/14.0 1.80/0.59
BAY15D
S8
#1034A AMBER MINIATURE BULB BAY15D BASE - 12.8/14.0 Volt 1.80/0.59 Amps Painted Amber S8 Double Contact (DC) Index Bayonet (BAY15d) Base 200/5000 Average Rated Hours 2.00" Maximum Overall Length #1034A
#1034A 12.8/14.0 1.80/0.59
BAY15D
S8
 #1154 MINIATURE BULB BAY15D BASE - 6.4/7.0 Volt 2.63/0.75 Amp S-8, Double Contact (DC) Index Bayonet (BAY15d) Base, C-6/C-6 Filament Design. 2.0" Maxium Overall Length. 200/1,000 Average Rated Hours. #1154
#1154 6.4/7.0 2.63/0.75
BAY15D
S8
 #1157 MINIATURE BULB BAY15D BASE - 12.8/14.0 Volt 2.1/0.59 Amps S8 Double Contact (DC) Index Bayonet (BAY15d) Base. 32/3 MSCP, 1,200/5,000 Average Rated Hours 2.00" Maximum Overall Length
#1157
12.8/14.0 2.1/0.59
BAY15D
S8
#1157NA NATURAL AMBER MINIATURE BULB BAY15D BASE - 12.8/14.0 Volt 2.1/0.59 Amp Natural Amber S8 Double Contact (DC) Index Bayonet (BAY15d) Base. 32/3 MSCP, 1,200/5,000 Average Rated Hours 2.00" Maximum Overall Length
#1157NA
12.8/14.0 2.1/0.59
BAY15D
S8
#1157NR NATURAL RED MINIATURE BULB BAY15D BASE - 12.8/14.0 Volt 2.1/0.59 Amp Natural Red S8 Double Contact (DC) Index Bayonet (BAY15d) Base. 32/3 MSCP, 1,200/5,000 Average Rated Hours 2.00" Maximum Overall Length
#1157NR 12.8/14.0 2.1/0.59

BAY15D

S8
#1662 MINIATURE BULB BAY15D BASE - 28/28V Volt 0.9/0.34 Amp S8 Double Contact Index Bayonet (BaY15D) Base, 32/6 MSCP 2CC-6 Filament Design. 400/1,000 Average Rated Hours, 2" Maximum Overall Length
#1662 28.0/28.0 0.9/0.34

BAY15D

S8
 #2057 MINIATURE BULB - 12.8/14.0 Volt 2.1/0.48 Amp S-8, Double Contact (DC) Index Bayonet (BAY15d) Base, C-6/C-6 Filament Design.  1,200/5,000 Average Rated Hours. 2.0" Maxium Overall Length. #2057
#2057 12.8/14.0 2.1/0.48
BAY15D
S8
 #2057LL LONG LIFE MINIATURE BULB BAY15D BASE - 12.8/14.0 Volt 2.1/0.48 Amp S-8, Double Contact (DC) Index Bayonet (BAY15d) Base, C-6/C-6 Filament Design.  2,400/10,000 Average Rated Hours. 2.0" Maxium Overall Length
#2057LL 12.8/14.0 2.1/0.48
BAY15D
S8
 #2057A AMBER MINIATURE BULB - 12.8/14.0 Volt 2.1/0.48 Amp Painted Amber S-8, Double Contact (DC) Index Bayonet (BAY15d) Base, C-6/C-6 Filament Design.  1,200/5,000 Average Rated Hours. 2.0" Maxium Overall Length. #2057A Miniature Bulb
#2057A 12.8/14.0 2.1/0.48
BAY15D
S8
 #2357A AMBER MINIATURE BULB BAY15D BASE - 12.8/14.0 Volt 2.23/0.59 Amp Painted Amber S-8, Double Contact (DC) Index Bayonet (BAY15d) Base, C-6/C-6 Filament Design. 400/5,000 Average Rated Hours. 2.0" Maxium Overall Length. #2357A Amber Miniature Bulb
#2357A 12.8/14.0 2.23/0.59
BAY15D
S8
#2397 MINIATURE BULB BAY15D BASE - 12.8/14.0 Volt 2.23/0.48 Amp S-8, Double Contact (DC) Index Bayonet (BAY15d) Base, C-6/C-6 Filament Design, 40/2 MSCP. 400/2,000 Average Rated Hours. 2.0" Maxium Overall Length. #2397 Bulb
#2397 12.8/14.0 2.23/0.48
BAY15D
S8
 #3496 MINIATURE BULB BAY15D BASE - 12.8/14 Volt 2.1/0.59 Amp T6 Double Contact Index Bayonet Base (BAY15D) Base Lamp, 43/3 MSCP, C-6/C-6 Filament Design, 2.0" Maximum Overall Length, 600/5,000 Average Rated Hours
#3496 13.5 0.37
BAY15D
T6
 #7528 MINIATURE BULB BAY15D BASE - 12/12 Volt 0.42/0.42 Amp 5.04/5.04 Watt S8 Double Contact (DC) Index Bayonet (BAY15d) Base. C-6/C6 Filament Design 150/1,500 Average Rated Hours 2.10" Average Overall Length #7528 Miniature Lamp
#7528 12.0/12.0 0.42/0.42
BAY15D
S8
 CE2 MINIATURE BULB BAY15D BASE - 10 Watt 48/25 Volt 0.52/0.20 Amp S-8 Miniature Bulb Double Contact (D.C.) Indexing Bayonet (BAY15d) Base C-6/C-6 Filament Design 300 Average Rated Hours. 2.00" Maximum Overall Length, 1.04" Maximum Outer Diameter
#CE2 48.0/25.0 0.52/0.20
BAY15D
S8
CE3 MINIATURE BULB BAY15D BASE - 10 Watt 36/25 Volt 0.52/0.20 Amp S-8 Miniature Bulb Double Contact (D.C.) Indexing Bayonet (BAY15d) Base C-6/C-6 Filament Design 300 Average Rated Hours. 2.00" Maximum Overall Length, 1.04" Maximum Outer Diameter
#CE3 36.0/25.0 0.52/0.20
BAY15D
S8
 CE4 MINIATURE BULB BAY15D BASE - 25 Watt 48 Volt 0.52 Amp S-8 Miniature Bulb Double Contact (D.C.) Indexing Bayonet (BAY15d) Base C-2V Filament Design 300 Average Rated Hours. 2.00" Maximum Overall Length, 1.04" Maximum Outer Diameter
#CE4 48.0 0.52
BAY15D
S8
P21/5W MINIATURE BULB BAY15D BASE - 13.5/13.5 Volt 1.86/0.44 Amp S-8 Miniature Bulb Double Contact (D.C.) Indexing Bayonet (BAY15d) Base C-6/C-6 Filament Design, 2.06" Maximum Overall Length, 1.05" Maximum Outer Diameter, 300/2,000 Average Rated Hours
#P21/5W 13.5/13.5 1.86/0.44
BAY15D
S8

BAZ15D: Base Diameter is 15mm

BAZ15D BAY15D


Bulb #
Volt Amp
Watts
Glass
More
#7225 MINIATURE BULB BAZ15D BASE - 13.5 Volt 1.852/0.37 Amp S-8 BAZ15D Base, C-6 Filament Design 35 MSCP. 150/1,500  Average Rated Hours, 2.0
#7225 12.0 1.852/0.37
BAZ15D
S8

 


BAU15S: Base Diameter is 15mm

BAU15D BAU15D

Note: Figure 2 shows a dual contact base while a BAU15S has a single contact point but the orientation of the pins remains the same.


Bulb #
Volt Amp
Watts
Glass
More
 #7507 AMBER MINIATURE BULB BAU15S BASE - 12 Volt 1.75 Amp 21 Watt Amber S-8 Single Contact (BAU15s) Bayonet Offset Base, C-6 Filament Design, 22.00 MSCP. 150 Average Rated Hours, 2.10" Maximum Overall Length
#7507 12.0 1.75
BAU15S
S8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


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