Look into the shifter well, as Brendy said in that post. You'll see a bullet-shaped thing attached to the shifter rod. The light is inside it. thing can be loose in there, tighten them up.

Look also at the wire powering the light. It bends a little every time the shifter rod moves, and after enough bends it begins to break. Yours may be such that the broken ends touch in Park and Reverse, but no other locations.

I replaced the wire on one of my 240s, forget which. Use a 18 gauge stranded wire. Plan on having enough length to make a loop in the shifter well, instead of the original "U" shape. Won't break again.

Connect the new wire to the old as close to the lamp holder as possible.

Use either solder and shrink tubing or a crimped connector. Same connection on the "car" end of the wire. The wire may be a brown one, there may be a black wire for ground.

Good Luck,

Bob

:>)