Is it possible? Just want to do a semi wire tuck, already have wired my battery so that it is in the trunk. Just need help getting the harnesses for the fuse box through the firewall. Any ideas, all help will be appreciated, I'm planning on keeping the headlight wires un tucked for now, seems too complicated.

 

Two threads for the same thing?

 

Yea, I really need help.

 

You'll have to disconnect the harness at the shock tower. pull the portion from the shock tower to the ecu back through the firewall unless you do a cannon plug type connector .
Think Rywire or Chasebays type of deal.
The box is what three large wires starter, battery, ground?
Extend them and bring it into the car.
Pull the glovebox and find a place to mount it.
Your battery is already in the rear of the car so it will only have to be shortened?

 

If you think the headlight tuck, one of the easiest parts of a tuck, is too difficult, then you should stop now. You're in over your head.

BTW this isn't a Civic specific question and three are dozens of threads you should have looked at before starting this thread.