If you have any salvage yards around you, you can get better relays with water proof connectors for cheap off of many '80's and '90's GM vehicles. I use these for my headlights, since they're made to be in the elements. The ones in the pic are for my fuel pump, A/C clutch and starter, but are the same relays, I just didn't have a picture of the headlight relays handy.
The relays along with a set of Sylvania Silverstar halogen sealed beams work amazing.