Take out the bench seat, and remove the back, take a look. Holes are small.
Look inside the trunk for the wing nuts to remove the unit.
On your 1989 MERCURY TOPAZ, the BACK-UP LIGHT SWITCH is: UNDER HOOD, DRIVER SIDE, LOWER ENGINE AREA, MOUNTED ON TOP OF TRANSMISSION
NONO
If it is anything like the 1993 model, open the trunk on the drivers side near the trunk lid hinge pull the carpet back, you should see a box with a red button on it push it in to reset the fuel pump.
inside the trunk on the left side towards the back if you pull back the carpet there is a red reset switch. can be triggered on front or rear impact.
It would be locted in the back of the car. under the trunk.
No, the access panel is in the trunk.
Not sure this is on a 94 topaz, they all have drum brakes in the back unless it's been modified. So therefore you might need a new calliper or a wheel cylinder.
The first topaz discovered in Brazil dates back to 1735.
The 1993 Mercury manual transmission linkage will have adjustment nuts on each end of the linkage. Turning the adjustment nuts will move the linkage back in forth.
If you have one installed, on the 2.3 L engine, it would be in the back of the engine, looking at the engine from the front of the car. Its in the frost plug.
It's in the trunk - back, left-hand corner. The cover tilts out from the top.