It sounds like you have a bulb socket that has melted. Please remove both front and both rear bulbs for inspection. Check down inside the socket.
Here is a guide that can help you see what Im talking about.
https://www.2carpros.com/articles/brake-lights-not-working
Its for brake lights but follows the same principal.
Please run some tests and get back to us so we can keep helping you.
Cheers, Ken
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Monday, October 23rd, 2017 AT 12:41 PM