Replacing a mouse hole power cord with a detachable cord
Our Jayco came with the power cord attached inside the trailer and fed out through a hole in the wall. The hole has a cover on it, but they are often called mouse holes for a good reason. One of the first mods done to the trailer was to replace that mouse hole with a detachable cord.
A number of kits are available to do this conversion. It is a fairly simple project that uses only common tools. Be sure the conversion kit #ad matches the ampere rating of the current cord.
Disclaimer: Working with electricity can be dangerous. I’m not a certified RV technician merely an RV owner. This post should not be taken as instructional. If you decide to do a similar type mod as depicted here, do the research and be aware of all the risks involved. I accept no liability, you have been warned. – Alan
- Remove the mouse hole cover and extend the cable fully. The majority of this cable is going to become the detachable power cord.
- Cut the cable leaving enough still attached to the trailer to work with and connect to the back of the new inlet.
- Connect the wires to the inlet and install the inlet in the hole. The kit comes with different adapters to fit pretty much any trailer manufacturer’s configuration.
- Attach the plug to the cut end of the loose cable.
- Plug the cable into the inlet with a twist. The other end goes to the outlet as it did before. Detach and coil up when not in use.

Yes, you lose the built-in cord storage, but you avoid having a large hole in the side of your trailer. The cord coils up nicely in a 5-gallon pail.
As an Amazon Associate I earn from qualifying purchases.