A proposal to replace unreliable Dupont jumper wires on Serial TTL debug pins with Julet E-Bike connectors. These IP68-rated, locking connectors are cheap, available on AliExpress in M6/M8 sizes, and come as pre-tinned pigtails ready for crimping. The author outlines a wiring convention for RX/TX/GND using color-coded wires and separate 1-pin Dupont headers for ground, enabling easy polarity switching. The setup is robust, foolproof, and supports future expansion via compatible 5- and 6-pin variants.
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