there isnt , reason being that when using rechargeable you need at least 6 ds or 12 aa batteries in the camera for it to operate, rechargeable voltage is lower than alkaline so 4 rechargeable d's dont have enough voltage to run the camera. . If you run 6 D or 12AA rechargeable in a camera with the 3600 , the camera will always use the internal batteries first since they are higher voltage than the panels internal battery(7.4). It will charge the internal batteries though but you are not using the internal panel battery at all in that case.
The ideal way to use a 3600 panel is with a 4 d camera with 4 alkaline d internals as back up , this way the camera runs on the solar panel unless it drops below 6 volts , then it switches to the internal alkaline while the panel recharges.
The yellow ended cable is only to be used with the Dual power bank when 6 d rechargeables are installed in bank 1.
What happens if I install the second 7.4 battery pack in the panel? Will it see the panel now as 14.8v and run off it until it falls below the internals? And yes I am running 12AA and 6D rechargeables.