TOKYO—Yazaki Corp. and Toray Industries Inc. have developed a new recycled plastic formulated specifically to mold connectors for automotive wire harnesses.

Worse yet, failure to use appropriate tools can also create problems ranging from annoying rattles and a marred dashboard to electrical ... crimping tool designed for appropriately sized butt splice ...

Trout When you have multiple or heavy-gauge electrical wires to join, twisting on wire connectors by hand can be a real bear ... Cut a couple of six-inch pieces of wire from a coat hanger and crimp ...

the connectors had flat metal pads meant for wires to solder on. For power-carrying connectors, there are good reasons this isn’t the norm. That said, you can make it work, but chances are not ...