Grommets Shrink And Solder Available here. When you are working on your car’s electrical systems, it helps to have a selection of grommets and shrink and solder connectors on hand. The grommet protects the electrical wires from sharp edges when the wires are fed through an opening. Once the wire is in place, the grommet then keeps the wire from chafing on any sharp edges along the opening. Heat shrink and solder connections help you to terminate a single wire or join it with another wire. These connectors protect the wire ends from the harsh environment of your car’s engine compartment, which helps to extend the wire’s lifespan. Our selection of grommets and shrink and solder connectors are sure to make your automotive electrical repairs easier.