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I have been installing NCE D13SR decoders in my Athearn fleet. All has gone well until I did my first F7B unit. I am not doing anything special or advanced, just basic hard wiring. The only difference between an A and a B is the lighting. No lights on the B. Do I need to wire the B units different than the A's ? My B units wont run at all. Not on DC, not on DCC. <br />I have the black to frame, orange to top of motor, gray to bottom of motor, and red to the metal tab for the trucks. On the A units, the blue goes directly to the headlight. What do I need to do???? HEEEELLLLLPPPP!!! <br />Thanks, <br />Tim
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