How to Install a Hardwired Surge Protector
My camping Google Docs
Note: If possible, I would recommend moving the orange 10 ga wire to the surge protector and running a new wire between the surge protector and the power panel.

Install pics

- Locate a safe, dry location.

- Disconnect the trailer from shore power and cut the supply romex (often 10 ga orange).

- Strip the wires.

- Familiarize yourself with the internals of the surge protector.

- Connect the upstream (incoming) wires.

- Connect the downstream (outgoing) wires.
- Face the current sensor the correct way by looking at the arrow (see manual).

- Screw the cover on.

- Connect the remote display.
- Connect the trailer to shore power and verify all the values (incoming voltage, no errors, etc) are correct.