Welcome Big Dan
They wouldn't even do some basic troubleshooting for you?
First question - do your horn, turn signals & brake lights all work?
Those are all powered off the same fuse as that which feeds the Diag connector.
If none of those work either, then check the fuse.
If they
do work, then you're only looking at one intermediate connector between the fuse panel and the diag connector where there might be a bad connection. The power should be on the orange wire.