1982 Newell 38' Classic No Brake Lights!

[prarieschooner]

They only problem that we had with the Prairie Schooner was no Brake Lights. I could use some more of the valuable advice afforded by this forum.
1st the right and left Turn Signals are working (now that I have been able to change out the burnt Sealed Beams, thanks Clarke). The Emergency Flashers both work as well.
2nd I have been able to find the Pressure Switch (located forward in the Air Line to the Front Brakes). There is Power here and the Switch is working. I have found another relay that is energized by the Pressure Switch that I believe works with the Cruise Control (another issue for later).
If I use a Jumper Wire from the Cruise Relay to the Right/Left Relays for the Turn/Brake Lights, I can get Brake Lights but not with Turn Signals. This leaves me to believe that the problem is forward and in the Brake and Turn Signal Circuit at the Front of the Coach.
Can someone describe what the Turn/Brake Circuit is?
* Patti and I had the pleasure of meeting Clarke and Elaine, they came to Hemet and gave us some great advice,