I get my Gold connectors from the local model shop. They come in a few different designs and sizes. Don't use any smaller than 4mm.
Usually sold in male/female pairs with heatshrink included.
Gold is a noble metal, so won't corrode, and makes an extremely good electrical connection, but the next weak link is the part of the cable next to the solder at the back of the connector. Flux residue seems to help rot the conductor at this point, so it's important to try and remove or avoid flux here, and then make the best effort to protect it from water.
Utopia knows of some heatshrink with hot melt glue inside it which sounds good?
Kato also found some good quality waterproof connectors from Triumph, which you can fit as a kit... I'll try and find the link.
By the way a ton of Titanium is a helluva lot of metal. I think you will slow your bike down if you fit that much...
Edit... Found the link.. Some very interesting reading here if you are thinking how you can improve your electrics. Good ol' Kato.
http://www.ukmonster.co.uk/monster/s...ad.php?t=46708