Rust Harbor puzzle: green card to blue card

Rust Harbor puzzle: bring a Green Keycard and one Electric Fuse, power the local circuit and use the green reader to reach a blue-card pickup. The checked guides describe two different Harbor layouts.

Match the layout before using the fuse

For the two-story building variant, locate its fuse box and switch, power the circuit, then go upstairs to the green-reader door. For the container/hangar variant, locate the first container's fuse box and nearby exterior switch, then follow the powered route into the hangar to the second container's green door.

Take the actual Blue Keycard pickup when it is present, inspect the room and leave deliberately. Hizzle recommends learning the exit before stopping to sort a full inventory. The route is researched; it has not been tested by Hizzle.

Keep power systems and timers separate

References agree on the ordinary electric-fuse route. RustData also lists a heavy-fuse option, while another guide describes Heavy Fuses as belonging to the wider Power Plant grid. UNSURE: that substitution and every current variant-specific interaction. This draft uses the common Electric Fuse route.

The references disagree on reset conditions and present different timer values. No exact safe looting window, radiation-free guarantee or fixed reward count is asserted. Check the live room's signals and Rust patch notes: live checks and November preview, especially when comparing November preview advice.

Related: Rust beginner guide: your first useful base, Rust solo starter base: what to build first, Rust best server for beginners: how to choose, Rust what to do first: a short priority list.