two things come to mind, 1. did you accidentaly switch the the two small wires on the solenoid? one is ign bypass to the coil and the other is the cranking wire. if they get swapped it will not crank with the key. 2. sometimes on old wiring, the act of touching them cause evil demons to be released. put a test light on the red wire with blue trace (thats the crank wire) and ground the other side of the light. then go turn the key and see if it lights up. if it does not light up, the evil demons have chewed their way through the wire and you need to find out where and why (sometimes bending the wire causes a break due to age and brittle fatigued wires). hope this helps, hawkrod