Depends on whether there are bolts or slotted screws holding it on.

If bolts, easy, if screws, well, a PITA if you cannot reach the top one.

Check the bushings, they are cheap, but a ***** to get in sometimes -- I take the lever off the tranny.

To change switch, jack up car (can't reach it on the ground, I don't think), pull plug off, remove alinkage and lever (usually held on by a pinch bolt you will have to remove completely, won't come off till you do), and you may need to remove the lever that operates the switch. Switch is held on by three screws, fits over the shaft going into the tranny.

Install new switch, install lever, loosen screw for switch actuating lever, and put tranny in neutral if it isn't there. Line the hole in the lever up with the hole in the switch (a small drill works nicely) and tighten screw. Reattach linkage and plug wire in.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!