West marine has a kit part #11959608

ebay. I thought that getting rid of all my old crimp connectors I have laying around would be a good thing. $27 for the whole package. It is coming from China....but they are all most likely made there anyway.

I've had great buying the sealed marine connectors on Amazon. Pretty inexpensive too.

I push a bunch of dialectic grease into the shrink wrap connector before I heat it.

Another option is to solder with bare connectors and shrink tubing.