Thanks mate, and sorry, should not have used the word "resistance", I do not know what I am talking about technically.

I pulled the dark green directional wire (RH rear) from the turn signal switch plug at the bottom of the column
Ran a long "jumper" wire from that pulled (turn signal switch) wire to the RH rear socket contact and got a very weak turn signal light, trying several spots on the contact.
Pulled that side of the contact out of the RH rear socket and the jumper wire operated the turn signal light correctly when connected directly to the bulb.
Cleaned the socket as best I could, put it back in the socket and tested again with the same results. Did that 3 times, thinking I had found the bad spot in the circuit.

Hope that makes sense, no knowledge but a little logic.

To be safe, I left the dark green directional wire disconnected at the plug at the column, now everything works except the RH rear stop light/directional light, and the fuse does not blow.

At least for the moment I can move the coach with a single (LH side) brake light functioning and 3 out of 4 directionals.

That's as close as I am going to get today, not sure what I am missing yet.

Jeff