I'm back dating now that I will actually have a layout room. Anyways these 3 SD60's are new have only been out of their box 3 times and never touched rail. 1st time to test with 9 volt battery. 2nd time just yesterday to test with 9 volt battery to make sure they still work they do in both directions. Could use a clean and live 3rd time to take photos with on my phone that i'm having a heckbof a time transferring here. These are nice undec units Looking to trade for more era specific units that for my 1976-80 era. Trade 1 for 1 of equal quality power.