Kevin you are giving me a headache. I'm not pushing the last diagram. I felt it would not work. Yes it is a modification of your diagram which was a modification of my 2 relay diagram. I recommend the 4 relay with my instructions on how to wire. I was just showing how I tried to make 2 relays work with the blue additions. They are jumpers. Do you see that? They connect 87/30 when flasher latches the relay, then off when flasher pauses which would light the turn/brake filament again if brakes were applied at that time. But the 1/2 sec flasher interval would make it seem not to flash. That's what I also said. It's for rear only. Front would be as John was hoping. But No dice.
I don't wish to discuss that diagram, it was just in case someone saw an avenue. That is group brainstorming 101. Never afraid to suggest an idea even if you think it does not work . Someone may pick several pieces of ideas and hit the jackpot. I actually had training on that at Honeywell Aerospace.
My instructions and 4 relay diagram will do the trick, including flashing the left or right pilot. That is the best I can do. It's an answer. The only one at this time.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
I'm not pushing the last diagram. I felt it would not work. Yes it is a modification of your diagram which was a modification of my 2 relay diagram. I recommend the 4 relay with my instructions on how to wire. I was just showing how I tried to make 2 relays work with the blue additions. They are jumpers. Do you see that? They connect 87/30 when flasher latches the relay, then off when flasher pauses which would light the turn/brake filament again if brakes were applied at that time. But the 1/2 sec flasher interval would make it seem not to flash. That's what I also said. It's for rear only. Front would be as John was hoping. But No dice. 
