Rear Blower Switch Bulb Size?

[detroadster]

I'm replacing all the burnt out T1 bulbs in my dash switches. Pulled the switch to the lower right of the steering wheel for the rear HVAC fan On/Off and discovered that its bulbs are slightly larger than the T1 size used in the fog lamp, door lock/unlock, and rear defroster. Anyone know the proper size for this larger bulb? Seems like it's close to a T1-1/2 but not quite a perfect match.

 

[detroadster]

Figured it out! it's a "T-1 3/4". Found a drop on replacement that works perfectly, complete with the screw in base and silicone cap to change the color for $0.99 at a place called Bulb Town. They shipped to me in just a couple days.

Store Temporarily Closed for Maintenance

www.bulbtown.com

OEM on the right with orange cap. Replacement on the left with red cap. Despite the red silicone cap it looks orange when the switch is on.