Serviceability First: Quick-Disconnects & Door Panel Access

If you can't service it fast, you built it wrong. Here's the RV-friendly way to keep your smart lock maintainable.

1) Label Polarity at Every Junction

Heat-shrink labels or printed flags: +12V (red) / GND (black).
Mirror labels on both sides of a connector so you never guess orientation.
Ferrules on all screw-terminal ends for repeatable terminations.

2) Choose a Proper Quick-Disconnect

XT30/XT60 (latching, keyed) for DC lines inside the door cavity.
Locking barrel or Molex Micro-Fit for tighter spaces.
Mount the disconnect inside the warm side of the door to avoid water/salt exposure.

3) Create a Service Loop

Leave 10–15 cm of extra cable (strain-relieved) so you can pull the interior housing off and work comfortably without tugging on terminals.

4) Fast Door Panel Access

Use identical-head screws and a single tool (e.g., 2.5 mm hex) for the entire panel.
Keep a spare set of panel clips/screws taped inside the door cavity.
Mark one hidden "index screw" with a paint dot so you always start in the right spot.

5) Spare Fuse + Doc Card

Zip-tie a spare inline fuse inside the cavity. Add a 3×5 card: wiring path, fuse rating, connector type, last service date. Future-you will send a thank-you note.

A 5-minute service job beats a 50-minute teardown. Serviceability isn't "extra"; it's the difference between loving your setup and cursing it.