Changing the end of the plug is not a big deal.  But the wiring support 30 amp?

It would be foolish to run 30 amp into a system designed to only handle 20amp. You could melt a wire, short out a system, cause a fire.

You need to have somebody quailifed look at your trailer and determine if the wiring, breaker panel, ciruit breakers etc can handle 30 amps.

So it came from the factory as a shell, and you had an LQ put in later?  Perhaps whoever did the LQ can give you a heads up on the wiring capacities, the amps being pulled by whatever appliances, and also change it over to the 30amp hookup.....but surely in doing the LQ they would have recognized the need for the 30am hooikup, unless they left the 20 on there to protect the wiring etc from overload. Also, need to not overload the amp rating of the power converter in it....

coming back into camp from a ride to find the trailer in a ashpile would definitely put a crimp in the day,...

Yes I bought it as a shell but had AC/Heat with it so I am assuming it was already wired since that came with it.  So I assume it was wired for 20amp.  Not that I have problems just most place have 30amp to hook up.  Is it okay to plug into a place that provides 30amp hook up with a 20amp trailer? 

The stuff inside the trailer may be rated for 30 amp and you just had a 20 amp cord.  It may be as easy as a new cord or a new adapter.

But you need somebody knowledgeable to look it and tell you. If you don't have the skills, please hire somebody qualified to do this.

I just worry that If I tried to give directions over the internet, either I or you would miss something and ruin your trailer.

Any trailer repair shop and probably most trailer sales offices probably have somebody on staff that in a couple of minutes could give you some advice when they are looking directly at the parts.

Start with where the wire enters the trailer and trace it through the trailer.

What gauge is the wire?

The wire should enter the trailer and go into a distribution box. Some sort of a Convertor/Circuit Breaker. What is that box rated at? If that box is rated at 30 amp we can convert to a30 amp plug.  If it is rated at 20amp it will accept the higher amp power and break it down into the lower amps and distribute the power. But if the wire coming in and the panel are not rated to handle 30 amp. You should not be using 30 amp.

It means that you have two circuits in your trailer, that are each protected to 15 amps of maximum current. This means your trailer probably has internal 14 awg wiring. They may or may not, be an indicator the total amount of current your shore cord is capable of providing.

The only way to know the capacity of your shore cord, is to determine the size of its wiring; IE the wire gauge.

Gard