On etiquette, at the Houston Pick A Part yards it is self serve wrecking yards. So you on your own out there. In the 10,000+ AMCs I have seen crushed since 1983...there has not been a AMC ANYTHING in them for 4-5 years. In that time period, there used to be 3-4 rows of AMC cars at the pick a parts, then 2 rows, then 1 row, then mixed in with Chryslers then gone. If you google ALTERED AMCS one of the oldest files comes up off my site about the destruction.
It was depresing to say the least that I would go out to them, all 3 in one day, document the cars, pull 'rare' or 'unique' items off them, then call area AMCers, put in newsletter, even using my own customer base to tell people that these cars had maybe 6 weeks left before crusher. So I would go back out and nothing had been pulled, it was like many people I guess thought there would be this wishing well of endless parts supply forever.
On top of that, you had people that might rip whole 71-74 AMX dash out of car, destroying it, just to get the 50 cent bulb holders in the gauges, something they probably tossed in pocket anyways, but could have easily found in local auto parts stores Help! section cheap.
To make matters worse, the sound of breaking tempered glass always bothered me. This was the workers of the place, minimum wagers who were told to walk around yard and pick up any loose parts, and they would unceremoniously thrown them thru back glass of the nearest car. Granted if it was a brand x or Renualt then no harm no foul, but it didn't matter, if a wheel, driveshaft, whatever laying near that car they automatically assumed it came from that car and wheee thru back glass it goes. While it is all water undre bridge now from time long ago when many AMCs were in junkyards, still bums me out to think about it, especially the low miler cars like 18,000 mile Hornet, or SCCA SX/4 race car, police Ambassadors & Matdors, AMXs, Javelins, didn't matter was all scrap weight to them. Can't save them all you know but too bad so many were wasted to begin with.