oldstuff
Member
I have an Athearn EMD SW7. Looks like one of the motor contacts routes through the chassis. Any hints on fitting a decoder? Initial thoughts are just to insulate the lower motor contacts, which are metal strips, underneath the motor from the chassis. The upper ones (the white wires) would just need to be cut. The the decoder can be wired in from the chassis to the lower contacts, and in the gap(s) in the white wires. I'm not interested in sound so that isn't an issue as there is plenty of space to locate the decoder at the cab end.