Here was a retro fit of ERR and RS to a 3V PS-2 MTH engine. To keep all features I had to convert the PS-2 smoke to PS-1, luckly I had a smoke unit instock that was a direct match to the PS-2 version. Back fit PS-1 couplers, install a CV board to run the Number board, Interior, and marker lights, converted HL/RL to LED run off the Cruise CDR, and snuggle everything into the narrow body. I converted the normal switch accessed through the roof to the smoke control and Run/Prg switch. Still finishing it up, but operational. G
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