How to test converter?

If it is a deck mount check the dc fuses on the unit, found all 3 of mine bad on brand new 5th wheel. If someone reversed the battery cables for even a second they will blow as a safety to the converter.

Put the red lead of the tester on the red wire in the middlee of the fuse panal and the black lead to the white wire and read the voltage.
If it has a deck mount then red lead to the red wire and black lead to the white wire

Rob,

A voltmeter - even a 2$ CCV should tell you what you need to know. As nearly I can find out (and you should find and read the tag) your 5er has a 70amp converter. This should handle everything. So, I would suspect it is not getting line power to it. First, check that you have AC in the unit. Then, see if the breaker for the converter is set. Next, put the little meter on the converter terminals. They better be over 13V. If you see less than 12.5, the converter is either not making it or is dead all together.

Now, if you have 13~15V at the converter and things are still dim, find and check the battery terminals. The same numbers work here. If the converter is working and the batteries aren't, go looking for what came loose. Thing come loose all the time.

Matt

Using a volt meter you can measure both the input and the output voltage of your converter.
See if you can find an electrical person to help you.

If you have one of these Sears Clamp Ammeterit is real easy to do. I wanted one of these for a long time and kept hinting what a nice birthday or Christmas give it would make.. it finally came and I love it. This would make it easy to clamp around a lead to your battery and see if your converter is charging or not!