There is no such part on a Mercury Villager.
yes!
You have to remove the instrument cluster to get access to the bulbs.
The bulbs screw in from the rear. There are screws holding the light assy on and youhave to take them out to take the light off.
Yes, it should fit.
Buy a manual.
No, there is no "adjustment".
134-a
Stop light switches are mounted on the brake pedal lever, typically.
4.2 quarts
Powertrain Control Module
1995 Mercury Truck Villager Van 3.0L EFI SOHC 6cylThe Spark Plug Gap.032 (In thousandths of an inch)