bulbs on Ebay once and used them to replace old ones. (didn't purchase OEM ones)...and I'll double check for corrosion (pretty sure there is none though)... and I did more research and did see a similar post. So I guess I'll go purchase all OEM bulbs from Nissan and post back if it resolves the issue. (so that at least others can use this post if they have the same problem and get as frustrated as I do.)