If one of your appliances isn’t working, a broken wire may be to blame. Once you’ve located the damaged wires, there are a number of ways to repair it. The best choice depends on how much wire you have to work with and whether the wire will be exposed to heat or water.
This video from Sears PartsDirect shows how to use different connectors for your situation.
Tools and parts needed
Heat gun or hair dryer
Heat shrink tubes
Strip insulation from old wire
Hi, this is Wayne with Sears Parts Direct. Today, we're going to talk about a few ways to repair a broken wire. Wires inside your appliance can be pinched, burnt, frayed or broken. You can repair damaged wires using a suitable wire connector. For safety, before performing any wire repairs, disconnect power to your appliance.
The first step in this repair is to strip the insulation from the ends of the wire. Always use a wire stripper to strip off the insulation. Using a knife or wire cutter could be unsafe and could also damage the wire strands inside the insulation.
Place one end of the wire into the correct size stripping hole. The holes are marked by wire gauges—smaller numbers denote larger wire sizes. If you use a hole that’s too small, you may pull off wire strands along with the insulation. Strip 1/4 inch of insulation off the end of the wire. Once we’ve stripped the insulation, we’re ready to fasten the wire ends together.
Best uses for crimp connectors
Crimp wire connectors can be used when space inside the appliance is limited or when you don’t have much wire slack to work with. This connector is smaller than a wire nut and doesn’t shorten the existing wire.
First, place the bare end of the wire into the connector, leaving none exposed. Repeat the process for the other wire end. Squeeze the connector firmly with a crimping tool so the crimp securely grips the wire. Give the wire connector a couple of firm 'tugs" to see that it's connected and tight.
Crimped wire connections that could be exposed to water inside an appliance require a heat shrink tube seal to protect the new connection from moisture. Always remember to put the heat shrink tubes on the wire before you crimp the wire ends together.
Cover both ends of the connector with the heat shrink tube to create a good seal. Heat the tube using a heat gun or hair dryer until the tube shrinks up and seals the crimp connector.
Working with a wire nut connector
If that seems like too much work for you, you could always use a wire nut. Wire nuts are good to use when you have plenty of wire slack and you're not restricted by wire harness space. Ceramic wire nuts with high temperature ratings should be used to connect wires in ranges and other appliances that generate heat. Wire connectors should match the temperature rating of the wires that they're connecting.
To apply a wire nut, place it over the stripped wire ends until it covers all of the bare wire. Slowly twist the wire nut clockwise until it’s firmly secured. Give the wires a couple of tugs to make sure it’s on tight. You don’t need to twist the wire ends together before you install the wire nut. When a wire nut is used to connect wires exposed to moisture, seal the open end of the wire nut with silicone.
Replacing a broken spade connector
To repair a wire with a broken spade connector, cut off the existing connector and strip 1/4 inch of insulation from the wire end. Put the new connector onto the end of the wire and use a crimping tool to secure it to the wire. Give the wire connector a couple of firm “tugs" to see that it's connected and tight. Always check the continuity of the wire you repaired before reassembling the appliance.
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