I live in Norway and winter can be really cold. It's not unusal with tempratures below - 20. I understand that most of the users on this forum are not familiar with this thing. My question is therefore the possibility of getting a 1,5cm thick cabel through the existing hole which is located behind t...

I'm planning to install a Defa blockheater and a Defa heater in the cabin. Have anyone done this before? I'm wondering where in the firewall I should run the wire through - drill a new hole or use existing hole- the wire is about 1,5cm in diameter. Model J11