running wideband o2 sensor wires?

I just installed a aem wideband o2. I drilled and welded the o2 sensor to the exhaust. What is the best was to run the wires, from under the car to the caban? thanks

Zip tie it to the main harness in the engine bay and then drill a hole in the firewall by the clutch pedal and install a grommet and then run it through that.

I always bring the O2 sensor wire in where the stock rear o2 sensor came in. Under the drivers seat on the 2g, and the passenger seat on the EVO. Works well since I tend to use the stock rear sensor location anyway. The 1g doesn't have these holes premade, but you could do something along the same lines. Most poeple put the WBO2 box up under the dash/ECU/glovebox area, so coming in through the floor lends itself well to those locations too.