If you're using one of the new optimates, then it can plug into the connector on the dash. No need for a direct to battery connect. AFAIK, direct to battery is required only for the old optimates.
Thanks but my optimate 4 doesn't have the hella plug as I preferred to go direct to the battery so I have the option of powering a mini compressor from the same lead and I'd rather stay awau from the canbus
On routing the wires, if you loosen/takeout three screws holding the side panels (one just behind the steering column, the other to either side of the panels and the third directly above the front seat height adjuster), you can pretty much route the wires between the panels and the actual tank. Don't worry too much about where you route then from as long as they stay in place. use a few zip ties and you'll be good to go.
great thanks, this is really useful info
The PDM 60 is best located under the front seat (a tight fit), or the rear seat.
Again thanks. not sure If I'll need the PDM60 at the mo but that's good to know if I do
K