Radio unit connect to leisure battery

[carlos17]

I own a 2003 Peugeot Boxer based Compass and wonder if anyone can suggest best route for leading a connection to the cab from the leisure battery. Im guessing it will require to go over the drivers door but someone might know if theres an easier route?

 

[TonyJones]

Watching with interest as I want to do the same thing in my 2005 Citroën. Is your leisure battery under one of the cab seats?