Permatex makes a silicone dielectric grease. I use this on all outdoor connections. It is clear and doesent stain. Antenna as well as automotive connections. Battery terminals, battery cable connections, trailer light wiring, bulb sockets. Any electrical connection will benefit. I like to squirt it into the crimp connections and but splices where the wire goes. It's also good for lubricating O rings and keeping rubber weather stripping like new. Works on threaded fasteners too. I really like it if you can't tell. LOL
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