How do you replace ingnition coil and wires on 89 crown victoria

There are two possible answers. One with a distributor and one with the electronic distributorless ignition system. I'll put both here, starting with the distributor style first.

1) remove the negative cable from battery
2) remove the wires from the primary terminals on the coil (if there is only one, then remove that one)
3) unplug the secondary coil lead
4) remove the bolts and mounting bracket.
Do the same in reverse order to install new part
DISTIBUTORLESS SYSTEM
1) disconnect negative cable from battery
2) remove coil wires from each coil pack (Do NOT just grab and pull the wires off, use the locking tabs, push them in, twist and pull the wires off)
3) remove the bolts and bracket

When you replace the system or spark plug wires, using dielectric grease is a good idea.

On distributorless models, make sure you have the wires connected to the proper coil using the firing order as a reference. Firing order 1-3-7-2-6-5-4-8

Tip: Mark and label the wires so you do not mix them up