I found some electrical connectors online that looked like they would work pretty well for 4x4 applications. They are an insulated crimp connector with solder built in.

Crimp-style electrical connectors, commonly called "butt-connectors," have always been prone to failure. While easy to install, there are two basic problems with the butt-connector.

Deutsch connectors may be a bit larger than other connector types, such as Posi-Locks. But when you need multi-wire and multi-pin connectivity in an extremely ruggedized and weatherproof housing, they ...

Meeting UL outdoor use requirements for solar panel applications, the WVL series of weatherproof wire-to-wire connectors is designed to withstand extreme moisture and ultra-violet exposure. The ...

Replacing a broken taillight on my trailer reminded me of just how much I like solder seal butt connectors.Before I starting using them, I was always leery of using traditional crimp connectors ...

Squeeze the handles together to crimp the connector onto the wire. Step 6: The most magical feature of a multi-tool crimper and stripper are the threaded screw holes found in the middle of the tool.