<< Allright all you wise listees! I see a little bit of "marine" buildup on some of my connectors between the laptop and the bridge screen and mouse. Some of these are bendix(?) connectors and I see something on the same type connectors to my ICOM 502. Will smearing these connectors with die electric grease harm the signals travelling through these thin wires? In other words: Will the grease create too much of resistance in the conductors? ------------- <<I'm not sure about that, but pretty much every electrical connector on my boat gets a shot of Corrosion Block (blue/white spray can) at least annually. Shore power cords and connectors at both ends get it every three months. It's made for electrical connections, and I use it on all mechanical connections, but not inside the electronics.>> >> A properly designed electrical connector has enough contact wiping pressure to cut through small amounts of foreign material on the surfaces. Unless plated with gold, oxidation eventually builds up between the layers and the resistance rises. The oxidation can usually be removed by unplugging and replugging the connector a few times. If this doesn't work, a few spritzes of contact cleaner, available at any Radio Shack may do the trick. Every electronics maven knows that wiggling a connector often is the best way to restore a misbehaving peripheral. Try this before hitting the device with a hammer. Larry Z