Another thing I forgot.
I ran into this 10-15 years ago. It really is a great idea.
http://solutions.3m.com/wps/portal/3...beFR7R0D83TCgl
A "brush-on" insulating sealant. Brush some on after you are finished making your connections to the terminals! Also, don't forget to make drip loops on each of the wires so moisture doesn't run onto the terminals themselves.