Don't forget some bulbs can not be replaced with LEDS. Those accessories that require heat to operate. Like a rotating beacon, searchlight, etc.
Wow! I actually had something worthwhile to add to a technical post. I am still "Kinda new" to the more arcane knowledge of model trains. I don't believe in just adding "Mee too " or "I don't know" So I rarely post . Even though I have been playing with trains for 57 years now...