Amazon.com: 90 PCS Wirefy Female Spade
The heat-shrink tubing these connectors use is unusually large (due the large size of the female spade connector) and per some testing I did it only seals 16AWG wire completely. If you use 18AWG or smaller, you'll need to add regular heat-shrink tubing first, then shrink down the connector's tubing on top of …
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