Im trying to figure out what bulb I need for my GP.

Its bulb in the 'bigger' tailight section - I think there are 2 if not 3 lights in the rear assembly?

When my car is started with key in ignition the big section of the rear red assembly is not lit(this would be in the lower brightness setting) - however when I remote start my car the rear section is fully lit which is in the higher brightness setting(brakes being set).

Anyhow - is there 1 or 2 lights in the big part of the rear tailight assembly - or just 1?

Also, how hard is it to replace one of those bulbs? Do I need to go through the trunk?