#20-20846-4 (Non-powered A Unit)
20-20845-1 (Powered A Unit)
20-20845-3 (Unpowered B Unit)
When powered A Unit is running forward the headlight and cab are not lit … when the consist is running "backwards" (i.e. powered unit is pushing the consist) the Non-powered "A" unit has its headlight and cab lit.
Thanks for your help, Dan