Installing Bachmann DCC decoder in Russian Decapod?

[nemesys]

I finally got the pickup to work properly with the Decapod. So, with that, I decided to order the DCC decoder for it. I got it last week. It's bare with no harness or plug. How am I supposed to install it? All the wires in the tender are black or red. I can guess some of them but not all. There are 3 pairs of wires that go to the locomotive. Which ones are light and which ones are for the motor? Anybody knows?

[Trainman203]

Pay a tech to do that kind of work. You'll never regret it.