WANTING TO INTSALL decoder in a bachmann 4-4-0

Model Railroader Electronics and DCC
1

i wanting to installs a decoder in my bachmann 4-4-0 loco if anyone knows how please tell me

2

Assuming it the same

http://www.tcsdcc.com/Customer_Content/Installation_Pictures/HO_Scale/Bachmann/Spectrum_Modern_American_ALCO_Richmond/Bachmman_Spectrum_Modern_American_ALCO_Richmond.html

Peter