[Jay Gilmore (Mickey_mouse]

Just picked up one of these period peices for my 71 R/T has .green..blue..black..black with grey flash..orange with fuse..Red with fuse..
worked out two blacks to sensor to magnets on propshaft.. blue lights switch panel.. orange to battery lights up gauge. now would red be live ignition or what..
have 0-30..0-60..1/4 ET..1/4 Speed..MPH on switchs and you can calibrate.Any one

[Luke (Luke)]

Through the thing in the bin and go to the strip you'll get a real ET and have alot more fun then try and inprove your 60 foot times.

[Dave-R (Roppa440)]

No idea Jay. I don't think they were that accurate anyway were they??

Luke is right. Get up to the strip and try it out!