It was finding a spot to go through the firewall. The battery is on the driver's side and I tried there first. There was a cluster**** of shit on the other side including brake lines and gas lines so I chose not to try there. Went to the passengers side had to go through the floor. Well I had to run it through the front of the car because along the back there was nothing to strap the wire to, and I didn't want leave it rest on the manifold.