Re: new wiring- grounding plate
Best place is 4"-6" off the centerline, about 2' forward of the transom. That way it's in the water even at high speeds, offset enough to allow smooth water to the lower unit, and far enough forward to allow transducers to still function well. They only protrude 1/4" to 3/8" below the hull and are semi-faired already. See Ken's photo above.
The grounding plate is honeycombed bronze, and my 8"x3" plate has over 30 SQUARE FEET of grounding area. Thats like having a grounding sheet 3 feet wide and ten feet long on the bottom of your boat. I also ground everything to mine using 6 ga. battery cable or 10 ga. wire.
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Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury
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