Both of these have the same 9.3 mm little wedge base. The T10 variation is normally used in control panels and various other tiny recessed components of the auto. 9.3 mm wedge called T10 or T15. LED wedge light bulbs have three major sorts of wedge or push-in light bulbs in vehicles and cars. Both over lights all have the 16mm huge wedge base. We expand the light bulb’s size & power for the T15 wedge. 16mm wedge called 7440, 7443, 3156, or 3157, depending