The green with brown stripe is the heater motor wire. A green wire connects to the heater switch (pull/push) and the other wire from the switch connects to the green/brown wire. This wire is part of the harness, and the other end of the wire is located in the engine compartment which gets connect to the heater blower.
Black wires are ground. Check the obvious choices at one side of the windshield wiper switch, or each of the panel insturments which have a ground connection.
BTW: Make sure all of the black wires are grounded, the dash connection is at the flasher at the right firewall. Make sure each instrument is grounded (so the dash lights work). Also the flasher light has to be grounded to work. I added an additional wire connected to the flasher light housing, as my dash did not seem to be grounded.
Good luck,
Scott in CA