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Old 07-11-2014, 06:40 PM
TallSkinnyGuy TallSkinnyGuy is offline
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Join Date: Aug 2013
Boat: 1997 Prostar 190
Location: Nor Cal
Posts: 365
Corrosion -- something to replace? '97 PS190 350 tbi

While looking around at the back of the engine due to an unrelated issue I shined my light down in the area on the starboard half of the back of the engine and noticed that the terminals for the black wires with the yellow stripe in the middle of the picture below are very corroded and there is a defined "pool" of rust-colored bumpiness on the wall where the wires are connected.

There are a ton of electrical connections back there and I didn't want to start messing with stuff until having a better understanding of what this is. I'm guessing corrosion is bad and I should replace these wires and clean up the area, but is there anything I need to be careful of when doing this? Any particular process that must be followed?
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Old 07-11-2014, 07:16 PM
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André André is offline
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Join Date: Jul 2004
Boat: Prostar 190 1994
Location: Near Sherbrooke,Québec,Canada
Posts: 4,747
To be on the safe side,disconnect battery then remove, clean and thighten.
Not seing the corrosion very well...
Keep skiing!!!
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Old 07-11-2014, 07:17 PM
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mikeg205 mikeg205 is offline
Join Date: Aug 2011
Boat: 1995 Pro Star 205 5.7 Liter
Location: Plainfield - Joliet, IL
Posts: 17,461
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Disconnect battery take apart clean... Reassemble attach battery ... I did this on mine

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...A bad day water skiing still beats a good day at work...1995 Pro Star 205....
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Old 07-11-2014, 07:29 PM
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Bouyhead Bouyhead is offline
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Join Date: Feb 2009
Boat: 2008 22' Progression
Location: NYC
Posts: 1,762
When you back out those cad plated bolts You will find all the engine harness grounds. There should be at least three or four make sure they are clean.
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