however i was apalled to see the state of the wiring which connected to deck fitting leading to my masthead light. Having noted a 10v reading on my meter, i suspected that corrosion of the electrical cable had affected the integrity of the wiring. On removing the two pin deck fitting the severely corroded blackened stiff wire ends were visible - the obvious cause of the voltage drop. Is there any marine grade electrical cable or is this an inevitable consequence of deck fitings on an ocean going yacht? Any other tips on renewal?