Pat, don't know that I'll be much help, but the photo in the manual shows using the front edge on the rotor to line up the TDC. Also, it shows a small tab on top of the Alternator rotor(when the rotor is aligned properly), if there is not an identical one on the opposite side of the rotor, this may be helpful. But, you are right, it doesn't seem to say anywhere which cylinder will be at TDC at this point. GOOD LUCK!
