I actually got burned on this one with a customer. I had a building that all the tenants would hold the elevator by pulling the stop switch( with no alarm bell). Sometimes they would forget to put it back to run and cause nuisance calls. I thought that it was a code requirement to hook up the alarm bell to the stop switch. So I hooked it up. Well it pissed off every one in the building and the manager called the state inspector. The state inspector could not find any where in the code book that an alarm bell needs to be hooked up to a stop switch on a group II elevator. So now they just get a bill every time they leave the stop switch off.