Connecting old z5500Logitech Control pod with newer amp/sub

[mause]

Hi,
This is one of my first posts. I have tried to ask this question in different post which talks about hacking the z5500 sub so you can use it with different imputs. However the post seems to be dead and I thought i might geht some help if i start a new one. I have had a headless z 5500 system with a broken my control pod and could not get a replacement. I have used the information from the other posts to build a connection to connect to other input devices which has work fine. I recently however found and used the opportunity to buy a Pod of eBay to try and make this system complete again. I knew about the wiring changes that happened for the Pods number PID 636 and over, yet the number was not supply on the eBay description. Once I received the item with PID 527 I knew it would not hook up to my PID 824 sub which out any changes. I have tried to research this matter for hours taken the pod apart to try to find out what the wiring difference is between the old and new pod. It cannot be a major deal but as I am limited on the tools I have I am not sure which cables need re-soldering to a different position on the board. It would be great help if anyone knew the difference or maybe had an open POD with PID 637 and over, so I could see which connections have changes as i stupidly got rid of my broken one. I hope I have been clear and not to long winded. Any answers and help are much appreciated.
Thank you.

Adam