Thank you for the detailed explanation! 
I only have the 2002-current Bachmann catalogs that are available online.  I was in the dark about the info prior to 2002.


 

Bachmann catalogs from 2002 on, show 89293 for the ET&WNC Full Baggage car # 21 but I've see pictures of the box/label/car of the same thing showing 97420. 
The 89293 does not have a battery compartment but it also do not have any electrical contacts...thinking the baggage cars did not have lights inside. 

What is the difference between these 2 Bachmann ET&WNC Full Baggage Cars? 
models 89293 and 97420
97420 upc = 022899974200
89293 upc = 02289982931

I know of the Sam's Club Northern Lights Big Hauler set from around 2007, but would like to know if Bachmann made any other holiday set with Christmas LED lights including from factory. 
Thank you.

I misread this info and thought the newest 'big haulers' were version 7...  Version 7 2021-        PNP Big Hauler 4-6-0 ... All have the three window cab.   The new big haulers do not have 3 window cabs so must a version 5.

If you are still interested in selling this item, please reply to the private message I sent you.
Thank you.

Thank you for your info/help. 

I am looking for new or like new Big Hauler Sets...
Tweetsie 90033
Mountaineer (ET&WNC) 90048

Also may be in need of these...
4-6-0 Anniversary Edition ET&WNC 81098
4-6-0 Anniversary Edition ET&WNC 91606

If you have any of them available, please send me a PM or reply to this post. 
Thank you.