I did it in 1968. I didn't realize Marines could attend USAF schools- - - -who knew? Then I put it to use for several decades- - -USAF aircraft, auto and trick wiring systems, and industrial maintenance. Then I taught a couple of generations of high school kids to do it. The diodes at the pin #30 position prevent both brake light filaments from flashing by backing up through the "normally closed" contacts when the brakes are not applied. It's a simple and very effective method of creating a brake light discriminator circuit. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
