Mercury - Weather Cap Female 6-Pin Xlok Rigging Protection Cap 8M0210412. Overview. This female 6-pin Xlok weather cap closes off an unused tee bottom and keeps the connection from getting beat up by spray or grime. It's one of those simple pieces that saves you from chasing odd electrical gremlins later on. Most riggers throw one on anytime a port is left open so the harness stays clean and predictable.. Key Features. • Female 6-Pin Xlok Design - covers an unused tee bottom with a snug, direct-