Anytime you need to splice wires Z&M provides weatherpack connectors. The connector ends are labeled (A, B, C, D) so you just make sure you’re matching the color wire from A to A on the male and female connectors. For the engine harness, weatherpack connectors are used at the wiper motor, Duraspark connectors, and distributor. However, since we were ditching our Duraspark we only needed to clip the connectors from our old harness for the wiper motor. Leave enough wire to easily crimp on the weatherpack.