It's possible the connector to the ignition switch was inadvertently loosened while doing the bar change. It could have been making a bad connection when you first tried it but is completely loose now. You'll have to remove the radio again to get to it.

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Well Im sitting here thinking and thinking about this and I realized that when I was using my test light for checking circuits it was clipped to the positive battery post...all I was doing was lighting up on grounded circuits and not hot circuits (wow, embarrassing). Im gonna have to start this over again tomorrow and do it correctly. I'm confident the handle bar wiring is good and the connectors are good ( didnt take the plugs apart I soldered the wires inline and used shrink tubing so the plugs are untouched).

 

I had the battery tested and its ok, it just occurred to me that I was checking the circuits with my test light on the positive terminal (wtf) so all I was really checking was ground, not power (embarrasing). Will go back over tomorrow and do this correctly. All wiring was spiced with solder so the plugs were never taken apart...and it all worked briefly after the handlebar install. Is there a main fuse in the circuit to the ignition switch I may be missing?

 

I just tested the ignition circuit and the ignition switch is bad...wow! unfortunate coincidence???
Removed the switch and jumped the power to each side of the plug and voila...everything works. Now I wonder if maybe this is a coincidence or if I burned it up. I know the wiring is correct and I rechecked continuity to each circuit on the handlebar wiring. How common is it for the ignition switch to go bad?

 

I just tested the circuit and found the ignition switch is bad...haha, wtf!

 

Glad you got it sorted out.