Running light corrosion

Oct 13, 2020
179
catalina C-22 4980 channel islands CA
If you can take the metal tabs out you might try soaking them over night in muriatic acid. If that works, then coat them In a light coat of lanocote after reassembly.

Dano
 
Sep 25, 2008
7,539
Alden 50 Sarasota, Florida
Before trying to resurrect these, I’d carefully inspect the butt connector tabs. If any metal was lost to corrosion, making them pretty again is a waste of time as the electrical connections will surely fail.
 

dLj

.
Mar 23, 2017
4,568
Belliure 41 Back in the Chesapeake
To me it really just looks like a lot of surface corrosion. Take the bulb out - you may or may not be able to get the tabs out of the fixture, if you can great, clean them up well. or sure make sure the connectors are intact and can be cleaned up also. Replace that bulb with a LED they make for those. (I know, I know, it's not technically compliant as to be compliant you have to do the whole fixture).

Another observation - those spade connectors don't look like marine grade connectors. Even if you get a new fixture, do you have enough wire to pull through to cut those connectors off and put on good marine grade connectors? If you do, you should do that no matter what you do....

dj
 
Jun 17, 2022
327
Hunter 380 Comox BC
How much is your time worth? Do you prefer crimping 2x new heat-shrink spade connectors to a new fixture or spending a few hours cleaning this mess up?
 

dLj

.
Mar 23, 2017
4,568
Belliure 41 Back in the Chesapeake
How much is your time worth? Do you prefer crimping 2x new heat-shrink spade connectors to a new fixture or spending a few hours cleaning this mess up?
It's not just slapping new fixtures on. The new fixtures have a different attachment footprint. So not only are you spending around $500 for three new sealed LED fixtures, you now have to rebuild the attachment locations in all likelihood as the new fixtures will have a different attachment pattern.

dj
 
Jan 19, 2010
12,691
Hobie 16 & Rhodes 22 Skeeter Charleston
It's not just slapping new fixtures on. The new fixtures have a different attachment footprint. ...

dj
Maybe. From the pic, it looks like they are clamped to the rail.
 

dLj

.
Mar 23, 2017
4,568
Belliure 41 Back in the Chesapeake
Maybe. From the pic, it looks like they are clamped to the rail.
Not sure what you are looking at. That fixture is through bolted onto a stainless plate attached to the rail. Not sure how that plate is attached but likely welded. If only it were as easy as buy new and bolt on...

dj
 
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Sep 24, 2018
3,677
Catalina 30 MKIII Chicago
I just replaced a new, cheap stern light after too many connection issues. To my surprise, the SeaFlo unit was sealed. I would go with a more reputable brand if it's being used aloft though. Don't try to save your old unit. It's not worth it
 
Jun 17, 2022
327
Hunter 380 Comox BC
It's not just slapping new fixtures on. The new fixtures have a different attachment footprint. So not only are you spending around $500 for three new sealed LED fixtures, you now have to rebuild the attachment locations in all likelihood as the new fixtures will have a different attachment pattern.

dj
I've changed many.... if it's mounted to stainless plate you might have to drill new holes. Adds 10 mins to the 20 minute job....
 

dLj

.
Mar 23, 2017
4,568
Belliure 41 Back in the Chesapeake
I just replaced a new, cheap stern light after too many connection issues. To my surprise, the SeaFlo unit was sealed. I would go with a more reputable brand if it's being used aloft though. Don't try to save your old unit. It's not worth it
That hasn't been my experience. I have what looks like the same unit. Both my bow and stern light were not working due to corrosion issues. I went through the process of trying to find replacement units - I couldn't find any unit that was a similar footprint. My stainless steel mounting plates were welded into my bow pulpit. In order to make new units for, I would have had to build and weld in new plates. I rebuilt the internal connections - mine had notably worse corrosion. I pulled out more wire, made new spade connectors and put in LED bulbs.

They have now been running flawlessly for three years and have survived two Atlantic crossing with significant ocean water submersion. If they begin giving me problems again, I'll simply rebuild them again. The work to make new connection plates would be more than I feel needed.

I would also suggest the internal component be sprayed with T9 to minimize future corrosion issues.

I do agree if it were a mast head light, i'd put in a new light rather than fix.

dj
 

colemj

.
Jul 13, 2004
721
Dolphin Catamaran Dolphin 460 Mystic, CT
We've had those lights and they are terrible for corrosion. As for the quality of the spade connectors, I think they come pre-wired with those and a black/white wire pigtail. At least the ones that came on two different boats had the same. But it is possible that both installers used the same connectors and black/white pigtails to external ship wire.

Mark
 
Sep 24, 2018
3,677
Catalina 30 MKIII Chicago
That hasn't been my experience. I have what looks like the same unit. Both my bow and stern light were not working due to corrosion issues. I went through the process of trying to find replacement units - I couldn't find any unit that was a similar footprint. My stainless steel mounting plates were welded into my bow pulpit. In order to make new units for, I would have had to build and weld in new plates. I rebuilt the internal connections - mine had notably worse corrosion. I pulled out more wire, made new spade connectors and put in LED bulbs.

They have now been running flawlessly for three years and have survived two Atlantic crossing with significant ocean water submersion. If they begin giving me problems again, I'll simply rebuild them again. The work to make new connection plates would be more than I feel needed.

I would also suggest the internal component be sprayed with T9 to minimize future corrosion issues.

I do agree if it were a mast head light, i'd put in a new light rather than fix.

dj
In your case, I would rebuild. After my experience with connection issues, I'd probably put a dab of solder between the bulb and the electrical connector. I did this with the knock off I just replaced and it worked great until the LED burned out. So far so good with the SeaFlo. It's not as serviceable as others but it's sealed and only costs $15