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    • Identify Bulbs & Bases

     

    HEADLIGHTS:  If you are trying to identify headlights, refer to the top of our Headlight Section here.

     

    RV INTERIOR LIGHTING COMMON BULB TYPES

    Click Here to go to our LED Color Range Choice Page

    Click Here if you want to go to our page that talks about Lumens and Quality 

      BASE CROSS REFERENCE and IDENTIFICATION

    BY BASE TYPE

    M4 Part Numbers Begin

    Bulb Cross Reference*

    BA15S Single Contact Round 5/8” diameter

    1156-3528.jpg

    Click here for 1156- LEDs

     

    replaces1156.jpg

     

    Most Commonly Replaces 1141, 1156, 1003 in RVs

    1003, 1073, 1095, 1141, 1156, 1156A, 1195, 12088, 1295, 1295NA, 199, 2396, 3497, 631, 7506, 93, 97, 97A, 97NA

    BA15D Double Contact, Single Filament Round 5/8” diameter

    1142-5050.jpg

    Click here for 1142- LEDs

     

    replaces1142.jpg

     

    Most Commonly Replaces 1076 and 1142 in RVs

    1056, 1076, 1142, 68, 90

    (not compatible with a 1157 which is a dual filament bulb with similar contacts on the bottom.  1157s can be found in our Automotive section)

    3/8” wide Wedge Base

    921-5050.jpg

    Click here for 921- LEDs

    replaces921.jpg

     

    Most Commonly Replaces 912 and 921 in RVs

    904, 904NA, 906, 906NA, 912, 916, 916NA, 917, 920, 921, 922, 158, 160, 161, 161B, 168, 168A

    168NA, 175, 193, 194, 194B, 194G, 194NA, 194R, 2821, 2825, 2827, 2886X, 3652, 558, 579, 658, W5WB

    Bi Pin 3/16” apart

    g4type1b.jpg

    Click here for G4- LEDs

    replacesg4.jpg

     

    G4 / T3 / G6.35 / JC10 / JC20

    SEE HOW TO MEASURE HALOGEN IMAGE BELOW

     Bi Pin above:  For Flush Mount Fixtures where bulb sits sideways/horizontal:

    select-the-right-g4b.jpg

    If the measurement above is:
    - Less than 1 1/2" use the G4-6-5630-SIDE or G4-6-5630-SIDE-TP
    - From 1 1/2" to 1 7/8" use the G4-9-5630-SIDE or G4-12-5050-SIDE
    - Over 2" use the G4-18-5630-SIDE                (all in your color choice)

    Festoon

    211-2-led-bw2.jpg

    Click here for 211- LEDs

    festoonstandard.jpg

     

    Measure length at clips and compare.  Festoons are typically measured in millimeters (mm)  Common sizes 32mm, 36mm, 42mm.  Festoon is any bulb where contact is made at both ends and the light is in between.
    SPECIALTY BULBS    

     

    03.jpg

    Click here for 1383- LEDs

    standard1383.jpg

     

    Replaces 1383

    Long Neck Mushroom

    Also replaces any light with a BA15s base (see above) if it fits in the fixture.

     

    1156hp4.jpg

    Click here for 1139 LEDs

    1139standard.jpg

     

    Replaces 1139, 1139LF (1139IF)

    Short Neck Mushroom

    Also replaces any light with a BA15s base (see above) if it fits in the fixture.

     *Always check the space in your fixture against the dimensions of the LED you are considering to ensure there is enough room.  Some LED equivalents will be slightly larger than the incandescent they replace.