The technical sheet on the Bachmann website for DCC On Board for the E-Z Command Two Function Decoder, on page 2, has a List of supported CVs as: 1, 2, 3, 4, 7, 8, 17, 18, and 19 in the first box.

Does this mean that CVs 5 and 6 can not be changed?

HODenew

I have a Bachmann GP40 #63501. It has a factory installed 8-pin plug and want to make it DCC.

I know Bachmann makes a decoder: Model 44915.

I also saw a MRC decoder item # 1834, that seems to take up less space.

Is it best to stay Bachmann to Bachmann or is there some advantage to the smaller MRC decoder?

HODenew

These are all great ideas. Thank you all.

I have Anyrail and have tried other track systems with Anyrail and they work better for a close yard.

I read more on yard planning as suggested. More to come.

A friend gave me some old Atlas code 100 Snap Track and switches. They work great and result in a better yard.

Anyrail shows this too.

HODenew

I am trying to design/layout a rail yard. So far I have used #6 right and left crossovers off a mainline for an arrival/departure line. I then used left (44461) and right (44462) switches to create a thru yard, but the distance between the tracks is too great.

I tried using #6 switches and using 1/3 and 1/2 of an 18" radius curve, but the tracks are not straight in the yard.

What switch is best to use so the yard is closer together and do I need to use a different radius curve or cut track to make it fit?

HODenew

Will I need to isolate any switches on the Wye Junction so there are no shorts and can I use one controller.

Not doing DCC yest, just starting.

Thank you for the fast response.

I am trying to make a Wye Junction.

Do 3 #5 Wye Turnouts, part 44569, and connecting track have to be used or can other switches be used with one Wye switch and the connecting track?

I made it work using a computer layout program with 3 #5 Wye switches, but it seems to take lots of space and the Wye switches are more expensive.