I'm Back...! 1978 KZ650B No Start Again!

I thought I had it - I REALLY thought I had it, but I guess not. After my 'No Start Weirdness' post and correcting the spark plug mix-up, I had it cranking and starting reliably to the point I put it all back together again, and then did what I think this fatal mistake was - I changed the throttle cables. The old ones were starting to fray at the butterfly; I had two new ones and changed them out - that's ALL I did! I did not mess with anything electrical besides opening up the kill switch to take off and put on the new cables. I made sure when I put the kill switch back together that I didn't pinch the hot wire (the yellow and red one) or any of the other ones in there- I put the tank back on, hit the starter button and Nothing. All the lights work, the horn works, I have 13 volts on the battery, all the wire connectors are where they should be, but the start button is unresponsive. There is nothing I could see in the switch that was shorting out - all the wires appear okay and no shorts or bare wires in them either.  I'm going to go back out and check for voltage at the switch and spray some contact cleaner in there and see what happens, but does anybody have an idea of what it could be this time??

UPDATE - Never mind, I found it. Apparently when I changed out the cables, I pulled out one of the wires that was in a twin female connector buried in the wiring sleeve. I cut the sleeve and found the female connector was really loose, so I tightened it up, reconnected the wire and everything is fine. Sheesh.  "Everything is Connected," I guess, y'know??

I guess it ties into another post running currently about the "aging process" on connectors and how they lose spring tension. Main thing is you're sorted
PS: absolutely the right process to go back over where you just been

Yeah, I knew it had to be something I did; The bike started and ran great after I got that spark plug cap debacle sorted and the only thing I did this time was change out the cables. It's amazing though how stuff like that can hide. I had a problem once with a CB500 kick starter not disengaging - took me two weeks, a ton of research and a rebuild to find out the little return ramp underneath the toothed gear was ever so slightly bent, preventing the driven gear from riding up it and disengaging. It's the little things...