......and just by chance, the latest patient is a brass Weaver Hiawatha F7, with factory installed TMCC. By the time the diagnosis of a bad tether was discovered, it was simpler to replace the entire CC assembly with a new harness and ERR Cruise Commander + big steam sound ( pictured ). The original CC electronic equipment should be saveable, transferable and upgradeable with a Cruise Commander M.....with no shortage of patients on hand needing an upgrade.
Juggling components while finding optimum positions for each takes up so much installation time. We're so lucky these days to have the compact components that fit into almost anything. In 2 other installations I found the sounds could be enhanced by the addition of 2, 2W, 8ohm cube speakers (far right) in parallel with the Fatboy. Both improvements in deep tones and volume are impressive. I know this isn't proper speaker adaptation but it worked so well in my first upgrade ( MTH scale GG1) that I tried it again. Hope I don't overpower the amp.
Bruce