old HO Bachmann CENTENNIAL DD40X Locomotive

hello,

please HELP!

I bought an old HO Bachmann CENTENNIAL DD40X Locomotive,plasic chassis, was 2 motors in it but only one, but not like any motor i know off, small & only half the lenght of the truck.

i am looking for :-

2 new motors

finding out wat the white with yellow band wires for,( theres 4 of them,2 on top of each motor housing)

new trucks.

only thing is i carnt find any spare`s for it, keep being told know one keeps spares for them anymore,

the only numbers on the chassis is - 21129.

any help would great

cheers

Classicbonham