www.iFourWinns.com

While that device will actively control electrolysis, it does not isolate the boat ground from the shore-power ground. Unlike the previous discussion of devices that do not require power to provide protection, that device requires DC power at all times the boat is wet.

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Tom
Cape Coral

'99 Four Winns 258 Vista
http://www.ustream.tv/channel/bowcam
http://www.ustream.tv/channel/cape-coral-marine-radio VHF
http://67.207.143.181/vlf9.m3u VLF: Lightning, spherics

Well, maybe...
But I have those indicator lights on the electric switch panel in the cabin...
Where can I buy it?

The device in the photo is not a galvanic isolator, it is a impressed current cathodic protection system. It intentionally puts a charge on the outdrive to prevent corrosion.

The isolator allows small differences in ground to prevent corrosion and prevents large differences in grounds that can cause a shock hazard.

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2008 V358 Two-tone Blue V/P Dual Prop 320 HP
Lake Winnipesaukee, NH

Now it's being more complicated...
Are there 2 different devices?
I think that I need the galvanic isolator... At least the red light is on and it says galvanic isolator there...
So where is that galvanic isolator located...?

Now it's being more complicated...
Are there 2 different devices?
I think that I need the galvanic isolator... At least the red light is on and it says galvanic isolator there...
So where is that galvanic isolator located...?

Okay............. It's connected to the green wire from your shore power inlet. Trace the wire and ye shall find the GI. Should not be difficult to replace, and not too costly. While tracing the wire, play a copy of The Washington Post, or The Thunderer marches on your stereo to help ease your mind.
Search "Galvonic Isolater" on Google, and you will also find several you can buy to replace yours.

Best of luck to you.

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One of 4 Previous (Sold) Boats:
2000 Four Winns 268 Vista

Current Boat: 2004 Chaparral 235 ssi cuddy

Yes, two seperate devices

Suzafan, the galvanic isolator has to be near the shore power inlet or near the AC panel. It has to connect to shore ground. Below is a picture from the parts book for a 2005 258.

The impressed current device is in the engine room and does not connect to the indicator lights, it is not the galvanic isolator.

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2008 V358 Two-tone Blue V/P Dual Prop 320 HP
Lake Winnipesaukee, NH

Pull the electric panel off. It should be behind it.Look for the green wire off of the panel and follow. The green light doesn't light up as well as the red. Look close at the green light.If you don't have a red i'll bet the green is on or the bulb is burned out