Uses for Gasket Maker?

Would this be good for sealing up tail lights? Looks like someone used some, and the tail light seal seems pretty water-proof. On the other side, there is none to be found, and water is like a puddle within the driver side tail light. Slowly fixing my own car's little flaws.

I like to use it to make head gaskets.



..but anyway, unless you've got it sitting around and dont want to buy anything.I would use silicone to repair the lights..