Hi Anthony,
I'm not sure if your 205 is the same setup as my 201, but let's see.
Open your cowl flaps. With a flashlight, look inside the cowl at the back of the landing light. There should be 3 phillips head screws, for adjusting aim, and 3 nuts with springs behind them, which hold the lamp in place, going around the outside of the light bezel. If this is how your airplane is configured then proceed as follows:
1) Remove the nuts and springs and washers.
2) Do NOT remove or unscrew the phillips head screws. These are for adjusting the aim of the landing light ONLY.
3) Remove the plexiglass cover on the front of your cowl covering the landing light.
4) Gently pull the landing light out from the front of the cowl. You should have enough room to remove the two wires with a slotted screwdriver.
5) Reinstall the new lamp in reverse order. An assistant is helpful to hold the lamp in place while reinstalling the washers, springs and nuts. (Install with the same tension on the springs as when removed.)
A lot of people I know put the landing light in with the filament in a vertical position instead of the horizontal position most lights are installed in. It's suppose to stop the filament from an early demise from banging up and down when hot and shorting it out. I did this on mine. Time will tell.