Hello Al and
we are glad to have you join us here and we look forward to reading of your adventures and experiences. I am sure you will enjoy the website and forums. Good luck, stay safe and keep us posted.
Bulb can be gotten at any auto parts store.
You probably have the Power Gear slideout system. When retracting continue to hold the retract button after the slideout has stopped moving. If not we will need more specific coach and/or slideout information to be of much help without being too fayge. Also go ahead and find the slideout controller assuring all connections are clean and tight. This info on the controller will also be helpful if lock still are inop.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7