12 volt questions, how much is good?

Thanks everyone. The LED that burned up was one of five bulbs we bought last week. So I'm thinking bulb was bad? But wanted to make sure my volts were OK. We were going to replace the regular bulbs a couple at a time. That was until some plastic began to melt on one light. Went to get a new light and found out that even plastic is getting cheap now days. (To much heat from regular bulbs on cheap plastic) So we're going to replace the rest of the regular bulbs with LED's. I don't have any packaging from the others we bought. But tomorrow I'm taking this burned out one bulb back. If he gives me an exchange I going to post the stuff on the package here. To find out if it's really any good or not. If no exchange, well no more business from me. And we need 11 more.

Also going to add fan-stastic fan to this circuit and don't need to elec problems.

Thanks for all the help