Difference between H9 and H9B

dirtyzecret

Newly Enlightened
Joined
Oct 16, 2016
Messages
12
Maybe sort of a noob question this, but what is the difference between a H9 and a H9B bulb?
 

-Virgil-

Flashaholic
Joined
Mar 26, 2004
Messages
7,802
The H9B (or H11B) has what is marketed as a "one touch" base: physically installing the bulb also connects it electrically. With an H9 (or H11) you have to physically instll the bulb and plug in the 2-wire socket. Other than that, they're the same. An H9B (H11B) can't be adapted for use in a headlamp that takes H9 (H11), but an H9 (H11) can be adapted to a headlamp designed to take H9B (H11B).
 
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