Not having functions 9-12 should be OK, as I only want headlight, horn and bell to work on the lead unit, as described in the User's Guide.

I fully appreciate ALL YOUR RESPONSES.  Each had a NEW piece of information, except one where you simply repeated refer to the user guide which I didn't even know existed until your link from your first response. The User Guide is wonderful but still leaves areas of concern if you are not sure of what you are doing.

I live in a remote area hundreds of miles from any other model railroader.  I wish there was a Model RR club, or a local 'shop' to ask questions, but there isn't.  I have created my entire 6X10 double track with dogbone layout suspended from the ceiling from online purchases and web searching for knowledge.

I am retired and the cost of new/repair/replacement sound equipped power units takes a lot out of my budget. I feared I perhaps had corrupted two chips with my stupidity.

Again, thank you for you patience and hanging in there until my problem was resolved. I apologize for testing it with my repeated questions.

With my lack of knowledge.....i am curious

Using MRC [CONSIST SET], I have both F7A and F7B consisted to addr 001 again.  I can run them together as consisted forward backward, hearing appropriate motor noises.  Using a second MRC Throttle with engine addr of 220, I can activate the light and sound both the horn/whistle, which is all I want for sound.

So if I already have them consisted in the address I desire, [001], can i simply configure CV21/22 for the functions ??

I have tried repeatedly to use my program track before without any indication of change on the power unit, so I have been using Main Track configuration

Yes, they are in fact 7A and 7B.  My Bad

I was panicking because I thought I had assigned same consist number (020) as the engine address, but the engine numbers are 220 and 221 so I haven't messed things up.   I created a consist with the Prodigy handset again and it functions as it did before, movement with one throttle consist addr and whistle/horn/etc with a second throttle using engine addr

Because I have whistle, horn, fan sounds, etc., doesn't it have/support CV19 ??

Was going to proceed to configure them but will wait after you think they may not configure as the GP40s did

Successfully configured my GP40s and everything works correctly with CV19 (consist addr) set to 010 and 138.  CV21/22 work correctly

Proceeded to my Bachmann F9 A and B units, but messed up and used 020 for consist (CV19 and then realized that was the unit address - A / 220   B / 221).  Now when I set the A unit on the main track, I hear engine noises, but nothing functions. The B unit does nothing.

Tried to reset CV19 to 0, but nothing seems to register on the A unit. I set up my MRC Prodigy Express 2 to include a single detachable 3 ft program track but it doesn't seem to show any power.

Do you know of where I could send these two units to have them reset ? I will be calling around the Portland Or area tomorrow to see if I can find someone.  I live in a remote area with nearest hobby store, over 100 miles away

Apparently I was reading the wrong user guide/manual(s) and could not find what you were referring to.   Thanks for correcting me. I saw one web page that described adding the functions desired and applying that to CV21/22 and then saw another stating if you want them all, configure to 255.

Will attempt to configure them later today and am hoping for success now that you have provided me with good info.  I had DC layouts, but this is first DCC one and I'm nervous about screwing up the sound card beyond use. 

Thanks again !!

From my web searches, I thought CV21 and CV22 were where I configured the functions, but wasn't sure till you confirmed it.  Another search tonight found info that says if I want all functions, enter 255 as the value for both CV21, CV22.

So if I want to consist two GP40's, and configure the first GP40 CV19 at 01, the second GP40 REVERSE CV19 at 129, and both the first GP40 CV21 and CV22 to 255, I should be able to run consist with LOCO 0001, and F1 should activate the whistle, F2 should sound horn, etc

THANK YOU VERY MUCH.  I was pretty sure I was on the right track, but was unsure of all the pieces/values.  Will remove my current consist config and give it a try

Appreciate all the responses.
I've read about CV19 and its usage. If I configure a consist (01) using the MRC throttle doesn't that make assignment (01) to CV19 ?

My issue is once configured with the throttle I can control movement using The consist address but not any accessories such as horn/whistle/lights. I use a separate throttle and the engine address

I have consisted two Bachmann EMD GP40 using MRC throttle.  This allows me to run engines but, but have to use a separate throttle with individual engine address to utilize whistle/horn/light 'F' key functions

I see use of CV19 for consist address, but how do I configure position of unit [front, middle, rear] I see CV21/22 for Consist Function Group but find no explanation of how to use.

How do I configure the consist and have ALL functions controlled by one MRC throttle ??