M.T.H. HO 4-6-6-4 Challenger Engineer's Manual page 32

To set this consists up so that:
• The Headlight is ON in the Front engine when going Forward, OFF
when the consist is in Reverse
• The Reverse light and headlight is OFF in the Rear engine when the
consist is going Forward, headlight is ON, reverse light is OFF when the
consist is in Reverse
• The Middle engine has no lights in either direction
Perform the following:
1. Build the consist using your DCC system per the DCC system's
manufacturer's instructions. In many newer systems you have the ability to
tell the system which engine is reversed. Remember the consist address
you told the DCC system to be built at as you'll need to come back to that
address to actually run the consist. The instructions assume only CV19
gets the consists address and nothing more
2. Call up the Front engine on your DCC handheld; address 1 in this
example
3. Select CV22 and write a value of 1. This tells the engine that it's a forward
facing engine and that you want F0 to control the FL function at the
consist address. The engine will give you two horn blasts to announce that
it received the CV change
4. Ensure F0 is deactivated at the Front engine's address. Most systems have
a light bulb icon to indicate whether F0 is active or not. Ensure that it is
OFF
5. Call up the Rear engine on your DCC handheld; address 3 in this example
6. Set CV19 to 128 + the value of your consist address
a. So, if your consist address is 4 you would add 128+4=132. You
would write 132 to CV19. This tells the Rear engine that it's
reversed in the consist. You will get two horn blasts to announce
that it received the CV change. Some DCC systems may already
do this for you but the instructions assume your system does
not. If you are in doubt then go ahead and follow step 5 as it will
do no harm
M.T.H. HO 4-6-6-4 Challenger Steam Engine
32