2007 Freightliner Columbia J1939 terminating resister location?

Anyone have any idea of the location?
I am having intermittent eld connection issues.
The truck runs fine no lights and no issues but I figured I would start to look there first.

 

Interesting
Do you have any idea where the j1939 twisted gree/yellow would be?
I checked out the bunched air lines bY the the foot valve but didn’t find a twisted green/ yellow or a terminating resistor?

 

this is what my diag connector looks like.
It has a twisted green/orange and Yellow full time power and a yellow ground that connects to the j1708 block by the door jamb.
I do see the twist green /orange pair also run back to the ECM on the side of the engine.
Does this set up not use the twisted yellow/green backbone with the terminating resistors?

 

I see the round aluminum connector by the foot valve but it only has yellow wires and one twisted pair of green/orange wires that run back to the ECM on the engine.
Shouldn’t I see a pair of twisted green/ yellow ( backbone) wires at this connector?
Also my test information says it should read 60 ohms at pin c and D at the diag plug.
Mine doesn’t even have any pins in C Or D on my diag plug?

 

So thru my research I have determined that my truck (2007 Freightliner Columbia) has a J1939 plug but uses the J1708 protocol only so no terminating resistors or backbone I guess...