I don't have that model but a 2015 is probably regular bulbs and switching to LEDs is a great way tt heat, increase life and reduce 12 volt battery use.
You need to get one out to figure what they are.
It can also be failed connections as Jayco uses a lot of crimp connectors that are not moisture proof or reliable. When I replaced all my running lights I used low temp solder joints factory made in shrink tube that was much easier and better lasting than crimp joints.
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