There are two locations that are relatively easy to use.
First one, pull back the passenger carpet and you'll see the main harness go out at the base of the firewall/floor. This pops out right behind the power steering rack and can be a little tough to locate from the outside of the car at first.
Second one is below the booster on the driverside. There is a plug and can be popped out. It'* a little tougher to get up there in the dash, but once you get one wire..you can pull through anything you want. I'd suggest replacing the plug with a grommet.
Best pic I have. You can see the passengerside area right above the boot on the rack and on the driverside..well..it'* not easy to see.