All my interior lights have had the 1141 bulbs, I had to replace a couple the other day and asked the person at the counter of the auto parts store if there was a bulb that was brighten then the 1141's. She showed me a Sylvania Silverstar bulb, number 1156 that looks identical to the 1141, it says on the package that its a whiter light. I bought one package to try and it sure is brighter/whiter than the original 1141's. Does anyone know if its save to replace the whole coach with these new brighter bulbs ?? Thank you,