Hi Ipnsocal
what is Your "backdoor circuit query/complaint" ? What do You mean with "ideas" ? You do have the schematics - do You have the manual ? "Liberty Bell" is from that time - here https://www.ipdb.org/files/1436/Williams_1977_Liberty_Bell_Instruction_Manual.pdf on page-23 (ori-21) is the drawing of the Lock-Relay - ONE N.C.-Switch. What do You see in reality down in the cabinet in Your Toledo ? Greetings Rolf