Rear Wire Harness Connector

Looking for guidance as to where the 5 conductor connector for rear lighting is mounted. If someone knows the original location, your knowledge would be greatly appreciated.

 

I'm going from memory, From under the dash, doesn't it go through the firewall with the main wire bundle? From there the other half of the connector plugs into that and then goes down towards the frame and then routes to the rear end, I think. It's been 3 years Since I took mine all apart.

 

Thanks for the reply. Makes sense. I have the engine and front light harnesses running in separate looms through the firewall grommet. Connector is odd looking like it mounted to firewall.