Anyone with a Pani V4 have a guide for where to plug in the dda. On my Corse there is a plug under the seat very simple but on the SP there is no plug and the diagnostic plug is round.
I have the instructions in the garage, you'll have to wait for them though. It'll be the same as latest V4/V2/SF V4 I'd assume which are all connected the same way. It's dead simple if it is. Basically the GPS cable is under the number plate mount inside and you have to route it under the cowl. I'll send a pic of mine later (V2), but should be the same. The previous gen V4 is different to the latest and a bit more wiring involved on previous gen I think which could be where the confusion lies.
Here you go. The pic of the DDA itself is hard to see, but it shows where the GPS cable you have to route through has to connect to. The other should be self explanatory. Make sure you watch out for the instructions that differentiate V4 MY 19/20 vs the old gen