Pramac generator auto start wiring help

I have aquired an older Pramac P6000s (Blue canopy) which I want to connect to my Victron CCGX controller which gives auto start/stop signal. The Pramac has a key start whichs work fine. I am having problems getting any info on Pramac generally. There is an auto start controller available but this plugs into a CONN connector (newer  models) which I do not have on my model. As this is an American unit I was hoping someone could advise on my options for this? Surely its possible to hard wire into the start switch and control everything by way of the CCGX controller? I cannot find any info at all...