Turning key to "run" causes all power loss.

67Dart273 said

Have I talked to you about a correct 74 manual? I had a house fire, and had memory sticks from about 3 guys waiting on those files. If you need the manual, send me a pm, and we can arrange to get them to you by mail. They are too big to send over the net, at least from my end.

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I don't believe that I talked to you about a 1974 manual, unless it was over on the SlantSix forum site. In any case, I remembered that I had purchased a complete set of digital manual from Detroit Iron a few months ago and had not gotten around to downloading it yet. But I fixed that and now I have the schematics for the 74, which appear to be nearly identical if not 100% identical to the 73 schematic that I was working off of. But thanks for the offer!