[Tigers] Lucas dashboard switches

[Carmods at aol.com]

Rollright at aol.com writes:
 
I got about 5 dashboard switches in various condition. A  couple of  
them had a wavy very narrow, very thin copper (?) washer  between the round 
 
slotted nut and the body of the switch, falling  over the threaded part. 
Are they 
supposed to be used on all our toggle switches? 


Those thin copper washers were referred to as "Lucas  Seals" and were added 
to the switches in about 1969. They are intended to seal  the infectious 
"Lucas Virus" that lived within the vehicle electrical system  from escaping 
and infecting other vehicle systems.
 
John  Logan