I've got a '96 explorer.  I had to unbolt my seat when I changed my
front seat belt buckle a couple of years back.  Moving the seat
forward just didn't give me enough clearence to reach the bolt.

Your Ford dealership should be able to give you a code for your
keyless entry by using your VIN number.  My master code is on a credit
card sized card that I got when I bought my Explorer.  It also has a
code for the radio as I recall.

To get to my headlight bulbs, I raise my hood and there are two flaps
above the headlights that all access to the bulbs.  Just lift the
flaps and give the light bulb socket about a 1/4 turn and it should
come out.

Now for my rant about another bad Ford design - my driver's side seat
belt does not retract fast enough or well enough and I end up slamming
my door on the seat belt.

As far as the lock codes go, in the back cargo area look where you keep the
jack. Open the compartment and look towards to front, you will see a silver
component, on this component you will see the factory lock code.

Searcher1

Hello,

I had to replace my front belt buckle about a year ago.  IIRC, I think
I used a large Craftsman "star" torx type bit(like T40 or 45) that
usually clips into a 3/8 drive knuckle.  If you pull out the "bit" from
the knuckle it's a 1/4 hex that will fit inside a 1/4" ratcheting box
wrench and allow you to fit between the console and seat with a little
patience.  I got my replacement from a salvage yard.  Be sure to get
the plug harness attached or it will chime the seat belt warning. I'm
not sure on the size (35, 40 or 45?) but the type of tool to buy is:

Craftsman T45 Torx Bit Socket or similar

Sears item #00942666000 Mfr. model #42666

Ted