I'm helping out a friend who has a problem with the control solenoids on his aftermarket trim and Tilt, (CMC). When I worked on this the first time I found the solenoid block, solenoids and wiring laying in the bilge area. I advised him that electricity and saltwater don't mix. I then cleaned the male and female parts of the assembly with emory cloth. Kinda hard to get into the socket areas. As a stop-gap we put the assembly under the cover on the battery. (All this is done swinging on the davits as he did not get a trailer/wasn't going to need one!!) The next fix was done after borrowing and refitting an old trailer. This time I recleaned all contact areas and placed the assembly in a pvc enclosure on the transom. Six months later it's screwed again!! <br /><br />Is there a product that I can chemically clean these contacts and sockets with? I have used various products to retard or eliminate corrosion, does anyone have a great suggestion after I get it cleaned again. <br /><br />All work compounded by boat being used only seldomly and my friends impatience with taking the time to properly repair. Any and all suggestions appreciated 