One of the very first and simple modifications I did to my 1981 13 Scamp and now am doing to my 2005 Escape 17 is to convert the RV connector from a pull out cord through what is known as the "Mouse Hole," to a standard 30A RV Marine connector with a twist lock external cord.

Here is the existing mouse hole connector setup, very commonly found on Scamps, etc.

The reason it is known as a "Mouse Hole" is that mice will shinny up your power cord in the campgrounds and they can enter your trailer through the opening.  You will find the Ants do this as well through this very same pathway.

Step 1:  Drill out the rivets on the existing inlet and remove.

Step 2:  Pull your RV Connector cable all the way out and cut it with appropriate length so you may route the inside remaining cable out of the way.

Step 3: Clean all the old caulk/butyl off the fiberglass around the cutout.  That's all the Prep!

Another big reason you want to make this modification is not only to close up the Mouse and Ant access, but the cord when it is stuffed back into the trailer it takes up an entire storage bin.  After completing this project you will gain all of that underseat storage back for personal use and not storing RV cord.

Look at all the storage space that used to be full of electrical cable!!

Step 4: 

Using the new Park Power connectior mark and drill your 4 holes to mount the new connector.

Step 5:

I use this Park Power 30A connector and female twist lock connector to use the remaining cord as my external RV cord.

You now cut away the insulation on the trailer cord and strip the 3 wires to the correct length.  Slide the back cup and seal on and thread your cord through the the back cup in preparation for wiring the connector. There is a strain relief plate that goes over your cable on the back of the cup and two philips screws tighten that down.

Step 5:

White wire goes to white hole on the connector and tighten phillips screw, black to black, and green to green.  Mount the connector to the trailer, I used 4 - 1.5" # 8 SS bolts and locking nuts with washers.

Looking at the back from the inside of the storage.

One thing I will probably do in the next week is to build a 1/4 inch ply backing board to add some additional strength to the fiberglass since it is a stress point taking the cord on and off.

Trailer part is done.  Now I will put the 30A female plug on my cable that I cut off for the external cable.  I'll post pics of that when I get it finished.