When I was very new into the hobby I bought this mod off of @Jmac is it his old one? I didn't realise that the PREM/LE had node boards, which it plugs into, vs the PRO which doesn't have node boards and I had the Pro! I had to send it back to him after I got it, because they are two different mods. You don't have a pro one you are trying to install on a PREM/LE do you?
I searched back into my messages as I thought I may have it and bingo... this is the best I have though as it was a photo within the message and thats is some while back. Does this help?