There are periodic discussions of this sort of thing on the I-bob google group:
https://groups.google.com/forum/?hl=...m/internet-bob

I've been using hub dynamos for a long time, but it has always been Schmidt dynamos. The only thing I can suggest is to have the connector aimed down a bit, if only so that any water that runs down the wire (from the fork) will drip off of the bend at the bottom instead of running into the connector.

For attaching wire to the inside of a fender, you might check into using aluminum tape. I recall hearing good things about this.

The key to keeping spade connectors free of corrosion is to not use spade connectors.
Or more specifically, use connectors that are designed for use in wet, lousy conditions.
Personally, I just use high quality connector pins and sockets and use heatshrink tubing to shield the joint from moisture as much as possible. I sometimes use dielectric grease to keep moisture out of the joint where the pin goes into the socket, but the pins and sockets are nickle plated and are quite resistant to corrosion. You can pick up dielectric grease at most Radio Shacks.

I've got a lot of electronics experience with aircraft and earthmoving equipment, so my habits and preferences don't match well with the rest of the folks using dynamos. Honestly, the bike industry knows just enough about electronics and and good connectors to get by, and the customers are probably too price sensitive to use connectors built to survive frequent exposure to moisture. For the layperson, I'm not sure what the best solution is. Maybe check with an auto parts store to see what sort of moisture-resistant connectors they sell?

Steve in Peoria