Citreon Berlingo 23 plate getting cable through the firewall from the battery

[W Petsa]

Fitting a cable through the firewall of the  Citroen Berlingo 23 plate. 
I cant seem to be able to find an access point to fit a cable for a dc to dc charger from the battery back through the firewall back into the cabin. Has anyone else managed this or would it be safer to put it into a garage and let them do it.
Or is it feasible to run the cable ender chassis ?

What would the likely cost be to get a garage to do it ?

Any advice or opinion would be welcome..  


   

[Jed Clampit]

If you take the nearside front plastic wheel arch protector off you will find a rubber grommet by the bottom of the arch you can feed it through there not an easy job but no drilling holes.