Dan,
  Yes, you need to pull the steering wheel.  Follow Ken's instructions,
they're good.  The steering wheel will probably come off easily, but
there's a thin, tall black plastic shim on the shaft which you'll need
to pull in order to get the stalk switches off.  You can use a battery
puller or just a gentle touch with a wide flat-head screwdriver.  If
you've got cruise control, the wires feeding the cruise control switch
will likely be zip-tied to the steering column.

Best,
d.
1990 GL -- "Mudskipper"