Thanks guys! Sounds really confusing now. So, what do I need to buy brand, and type wise to get sound in this loco? Will a Soundtraxx system work, or should I look for something different.
Thanks again!

Thought about that. I finally used a fingernail for one ,and a small flat blade screwdriver for the other. Worked,but I'll try the pliers next to see if they do any better.
I called Bachmann about the sound issue. Talked to James,one of their techs. He said that the sound decoder will replace the current board , and that I'll have to un-solder the 8 pin plug from the current board and then re-solder it to the new one.
He says that Bachmann will not be offering any more sound solutions on their website.And since they're sold out of the one for this model, I will have to buy the sound system directly from Soundtraxx for this baby.
On another note,I've decided to leave it lettered as-is. I'll buy some log cars and a suitable logging caboose for it later. Interestingly, I researched the road name ,Greenbrier & Big Run Lumber Co.,and came up with nothing.The only thing I found that was even somewhat similar was this article on Wikipedia: https://en.wikipedia.org/wiki/St._Lawrence_Boom_and_Lumber_Company
Interesting,eh?

My new 10 wheeler arrived on Tuesday. I finally unboxed ,and ran it a little bit early this morning. I removed the tender body to inspect the DCC board. It has an 8 pin plug that is soldered onto a larger motherboard for the DCC system.
I found the sound board on the Bachmann parts site.
https://estore.bachmanntrains.com/index.php?main_page=product_info&cPath=698&products_id=10467&zenid=op5mpgsmr0upvgjjvnndvh9fq4
It is currently sold out. I'm a little bit confused on how I would install the sound board in the tender. Do I have to remove the existing board and un-solder the 8 pin plug from it, and then re-solder the 8 pin plug to the sound board, or??
I'm new to this DCC thing, so any help (such as through installation instructions) would be a great help as the instructions on the Bachmann parts site leave much to be desired.
On another note, this is a generally well built locomotive. I really like all of the mods that came with it. The slow speed operation is smooth forwards and backwards.
It is very well detailed. More so than the Anniversary edition Big Hauler in some ways.
I am over all very pleased with it. My only gripe is that the two tender plugs are in an awkward place,and are somewhat difficult to remove,which makes me worried that the wires may tear out of them during removal from the sockets.
Any suggestions as to how to safely remove these pins without damaging them?
And what is the packet of brown powder for?
Thanks guys!

Never mind. I found the problem. It was a bent down contact on top of the motor frame. It had gotten bent down too far to make proper contact with the circuit board where the wiring for the headlight goes during the last rebuild after I finished painting the model.
Once I figured that out ,it was a simple matter of bending up both contacts to make a better connection with the circuit board.
Now it's running perfectly again.
Thanks!

I bought a complete Hawthorne Village 2-6-0 locomotive,and tender to use as a donor to rebuild the #135. I got it for a good price.I combined both of them to produce a beautiful ,complete model that is black, with silver caps on the steam chest, white trim(think the #22 Colorado & Southern),and brass railings.
I also repainted the new tender, as the one that came with the #135 was missing a step.These On30 tenders are kind of hard to find with all 4 tender steps on them!

That's pretty great and interesting information. I do know that this new Bachmann  4-6-0 doesn't look much like the T-12 class locomotives ran by the D&RG. Unfortunately.
So,it will have to stand in for one,at best.
I've noticed that there's not a lot of reality in these Bachmann 4-6-0 locomotives. No matter which scale, or road name is represented, it seems that,when one does research, and looks at photos of the historic locomotives that these Bachmann'S are supposed to represent, the real thing varies greatly in physical  appearance from the model.
It's too bad that Bachmann primarily models their 4-6-0 loco after the ET&WNC 4-6-0 locomotive.You would think that they could have picked a more common 4-6-0 to base their model loco on.At least, it's very pretty!
This seems to be a common theme with many model locomotives from most manufacturers. I've seen some model locomotives  bearing some really fanciful numbers , and wheel configurations that never existed on the road names that they are supposed to represent.
Oh,well, what can be done but model your favorite lines as best as you can with what's commercially available?
Kit bash 'em whenever possible, which is something that I've seen with the G Scale 4-6-0, but is something that I am incapable of.
Sadly.

Thanks for the info,Ton! Hey,did you know that the #20 is being restored to full operating condition? Check out this youtube video that was posted only 2 days ago by the good folks at the Colorado Railroad Museum:
https://www.youtube.com/watch?v=N0e96IsLBcg&feature=share&fbclid=IwAR1aTgzY-0XS56VeGRwpk5O28YWcjj3e4Y4yGKBlQ_uWrjnAJm6ICzsgWCI
It's awesome!

Interesting. I have been kinda thinking about doing it as an RGS loco instead. However, I know that the D&RGW ran Class T-12 ten wheelers. For example, there's the #168 that was recently restored to running condition, and another survivor (#169) that is on static display in Alamosa,Co.
At one time ,the D&RGW boasted a total of 12 Class #12 ten wheelers numbered from #166 to #177.Nine of the others have been scrapped, while one was wrecked, and later scrapped. My information indicates that the tender is still at the wreck site,in the trees below the track.
My information source: http://www.drgw.net/info/T-12
Do I need to buy the Bachmann sound module,or just the T-1000?
Thanks!

Hi,again! I just picked up this little beauty from an on-line retailer for an incredible $69.99 (plus $9.99 Shipping) . It is a brand new Bachmann #28657 Spectrum On30 Baldwin 4-6-0 Steam Loco - DCC on Board, Greenbrier & Big Run Lumber Company.
I plan on relettering it for the Rio Grande.
My question is this: What do I need to buy to add sound to this model?
Thanks!

Thanks,Terry. That gave me few parts numbers to search for. Unfortunately, nobody seems to have the whistle that's more like the factory installed version. There's a standard, single chime whistle on Ebay, so I'll probably order that for now.

Hello. I am new here . I recently bought the above described On30 locomotive and tender on Ebay. It's missing the smoke stack and the whistle. I didn't see either part available on the Bachmann parts site,so I'm wondering if anybody here might be able to help me to find replacement parts.
I found a C&S Mogul style "Bear Trap" with spark arrester on Ebay :
https://www.ebay.com/itm/O-On3-On30-WISEMAN-BACK-SHOP-BRASS-PART-BS-064-C-S-BEARTRAP-LOCOMOTIVE-STACK/133277939031?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
Does anybody know if that would be a god fit?
I can't find a whistle, so , am I just out of luck getting that part, or does anyone have a suggestion?
Thank you!
Railman63