Hi Edward, your english is good.
89 is much less complicated than 96 and later.
One important point, do not start those electronic cars with booster, jumper, cables.
Have a premium battery fully loaded.
ECU electronic do not like low battery or electrical jump
I recommend a permanent automatic charger to keep battery full.
Low battery are very destructive too for electronic.
Those cars are reliable, drive yours as much as possible, regularly.
97 Continental R