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The MDB is ideally suited for installation in this classic switcher The front row of screw terminal connectors allow shell removal for maintenance. Also, lamp replacement is a snap. The board just fits under the hood, hosting the Lionel R2LC card. | ||
| The mounting of the MDB was accomplished by replacing one of the triac heat sink screws with a longer screw to protrude through the original "E" unit mounting bracket. A hole was drilled in the "E" unit bracket to provide optimal location of the MDB and R2LC. |  |
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The R2LC is positioned slightly above the channel in the switcher base. The combined width of the R2LC and the MDB is slightly larger than the channel. Positioning the R2LC slightly above the channel gives the needed clearance. A piece of electrical tape provides insurance if the R2LC moves. | ||
| A close-up of the program / run switch mounting bracket. I used a piece of brass mounted to the brush plate, and soldered directly to the program / run switch lugs. This provides a secure mechanical mount and electrical ground for the switch operation! |  |
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The program / run switch can be seen in this bottom view, sitting perfectly between the frame and cab. Only the switch lever is visible when the switcher is operating on the layout! | ||
