$90 *plus* installation! Yikes! :quiet
Use this instead:
This is called a "male motor base", and I found it a Hilltop Trailer sales, an RV dealer in Minneapolis.
Using this, you can use an inexpensive 14 gauge power cord instead of the bulky, dirty cord that must be stuffed int the trailer when you are finished, dirtying everything in the storage compartment.
The downside is you can only use 15 amps with it, which really isn't a downside. Unless you are running multiple high-wattage appliannces all at the same time, you don't need 30 amps.
I've put this into my Scamp
along with a 15 amp main breaker to prevent overloading the inlet. See "modifications and repairs" on my web site for more about this and other things I've done to my Scamp
-- Dan Meyer