[stugiv]

The first thing I tried was cleaning the contacts, which weren't bad to begin with. I can get a bulb in there & it will work (it's just one side that's giving me a problem), but once I put it back together the slightest jolt will cause it to go out. It seems like a waste to try & put an LED in there if there's a problem with the electrical connection.

I was just thinking that perhaps I have the wrong bulb in it as there are a lot of similar sizes with these festoon bulbs.

Thanks for the help.