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Old 24-07-2006, 13:54   #4
Alan Wheeler
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Join Date: Dec 2003
Location: Marlborough Sounds. New Zealand
Boat: Hartley Tahitian 45ft. Leisure Lady
Posts: 8,042
What hellosailor said. Nickel is your best bet if the plug is brass and the block is cast, although lanocote also works very well and especially in aluminium. The threads still get enough electrical connection. Not not use PTFE tape, it can islolate and insulate the thread.
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