Issue
Bought my civic in South East Asia - They are sold from new without heaters - only A/C due to the hot climate.

Question
I’m going to ship this back home and will require me to install the components to make the heater work.

Has anyone any experience in this (rare) job?

And what should be my first parts to buy? Heater core obviously? But is there anything post it he heater core/firewall? Are they difficult to install

Thanks so much! Iv been searching for help but didn’t find much.