Your DC distribution board has two separate sections, and you've only connected to one of them. You need to tie them together. There are two positive connections (one of which is more of an eyelet at the top of the fuse panel, which originally had a blue wire from the converter attached to it). See
this page for some good pictures and descriptions, and a summary of this issue at the bottom.
On the original converter, the three (that now have power) were connected to the battery all the time. The other five (that don't have power) were "unfiltered" and connected to the converter output. There was a relay in the converter that would switch them over to battery power when the converter wasn't operating because you weren't connected to 120V power.
The new converter doesn't have this split output, and supplies nice clean power to everything. You just need to jumper the two positive leads to tie the two positive busses together.