The parking light bulb is in my opinion one of the most difficult to get at and being unaware of the fitting doesn't help.

However it was finally removed with a pair of 6" pointed nose pliers, as it turned out the bulb housing like the bulb is a slide push fit and with gentle pulling slides away from the main housing.
Avoid pulling on the wiring at all cost, an easy thing to do when you can't see what your doing.

I have arrowed the small projection on the bulb housing that locates in a groove at the bottom when you re-install it.

Albert Rowe