Help needed with hole in skin.

[partsman01]

These are two pictures of a problem I found while washing our fifth wheel, I suspect because it is so close to the outlet it must be caused by electrolysis.
But how can one stop it, and how to patch it?
I hate to think that this spot is going to grow even bigger.
It is already through the skin.
Any ideas?
Ever seen this before?

[partsman01]

These are two pictures of a problem I found while washing our fifth wheel, I suspect because it is so close to the outlet it must be caused by electrolysis.
But how can one stop it, and how to patch it?
I hate to think that this spot is going to grow even bigger.
It is already through the skin.
Any ideas?
Ever seen this before?

[Hitchhiker]

It looks like the paint failed in those spots resulting in corrosion of the aluminum. I have my doubts about your theory that electrolysis caused it, that usually involves two dissimilar metals.

Repair will be difficult, can you remove that panel and replace it?

[partsman01]

Thanks, I should have mentioned this is a 1989 Prowler lynx I bought second or so hand from a dealer last year.
I have seen no evidence of leaks in this thing, but will have to investigate that area from inside.
It is on the same side as the awning.

[Doug-Tex]

I have a friend with a similar situation. Our local RV store offered two solutions. One was to replace a section of skin which was expensive and the color would never match anyway or buy a $5.00 vent cover that would cover the area and install that. He opted for the vent cover and it worked really well.
Just another idea.

[Sunny]

partsman
Looks like there may be more beside the outlet.
unless something is touching it on the inside I don't know about electrolysis but could be maybe the ground wire for the outlet.

Tom