RE: 1971 Alumacoach
Hi Scott,
We own a 16ft 1972 Alumacoach. Unfortunately we also don't have the owners manual or a grey/black holding tank so we aren't much help but I wanted to drop you a note to let you know you aren't alone. Oddly enough we have the manual for the 8 track, the stove/oven/heater, hot water tank, etc but no manual for the actual unit. We also had converter issues (and a wiring mess!) so we have removed the converter and are starting new. Not sure about the layout for your Alumacoach but we needed to dismantle the entire kitchen cabinet just to get to the converter because there was no access panel.
Anyway, from what little we have discovered about Alumacoach, there aren't many of them out there so you have a very rare RV in your possession. We find the Airstream forum is a good source of info because the trailer is very similar to the old Airstreams including the use of many Bargman parts. Enjoy!
Esther