The Omega RV Double Dome Light with Switch # 328-001-902XPW uses a 921 bulb which is a wedge style like the # A921B that you also mentioned. This type of bulb removes by pulling it straight out from the base. If it feels like it's stuck try wiggling it back and forth. I'd wait till the light has been off a few minutes too so that it's not hot to touch. view full answer...
The max pressure rating for both the wheel and tire is the cold rating. If you have 110 as the max for the tire and the wheel you'd want to inflate the tire to 110 when cold and you'd be fine. Also, it most likely is your valve stem that has the 110 psi rating which could be swapped out to a higher rating. view full answer...