Hello All

I am new to the forum and here is my first question.  A tech I spoke with from Bachmann could not answer my question but said perhaps someone on this forum could.  Thanks in advance for your help.  Here goes . . .

I am operating a Digitrax system on an HO layout.  I want to install a TCS B-MB2 decoder in a Bachmann Spectrum J Class 2 8 4 steam engine.  I have the decoder board and I know which color wires go to which pins.  All of the wires in my engine are black, but a Bachmann tech helped me identify which black wires are attached to which pins on the Bachmann 8 pin connector so I can now install the decoder.

My question:  On the B-MB2 decoder are two contacts, separate from the other contacts, for the backup light.  It is a bulb instead of a LED.  However, the backup light on my engine has two wires from the light that attach to the original Bachmann board, and two addition wires from two of the four copper strips on the tender that attach to the original Bachmann board.  What do I do with the two wires from the copper strips attached to the tender?  I only have two connections on my decoder to attach the backup light, but the original Bachmann wiring has four wires associated with the backup light on the original Bachmann board.  I'm confused!

Thanks for your help.

Jack