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Reply to "Removing directional bulb"

Thanks George.  This engine was originally a non protosound unit with QSI boards in the A unit and powered B unit.  Would the directional lights be incandescent bulbs and operating at what voltage?   I installed a protosound 1 master (in powered A) and slave unit (in powered B).  New bulbs came with the protosound 1 boards.  Would the original bulb from the non powered A unit be useable with the protosound 1 boards?       Bob

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