Amber outdoor light fixture

OK, so this is odd. Our new trailer has both the amber outdoor light and the flood light. We normally will use (or did on our old camper) the amber light as a sort of "porch" light at night so no-one would goof with our site and stuff. I just noticed that where there used to be caulk/sealant around the fixture where it connects to the wall of the trailer, it appears melted and the caulk is missing (dripping), leaving about a 2 inch long, 1/16 inch wide, swath open to the elements. I turned on the light and rather soon it got extremely hot, so I am going to replace the light with an LED model (about the only non-LED light on the camper).

My question is if you all think I could get by using a clear silicone caulk or should I use something proprietary to the industry. It is a clear residue currently.

Thanks for the help.