[alanw]

I have the X-4 Pro, same thing as the X-4 basically. I made a simple wiring harness using inexpensive connectors from Oreilly auto parts, I'm guessing cost around $5. If you use a waterproof box for the battery then you'd need another type of thru-box connector or wire seal. I don't use a waterproof box because, well the battery is already waterproof. I mean why put a plastic box inside of a plastic box? Use dielectric grease on all connections and always use an inline fuse close to the battery. I can post a pic later if you want.