Need some help diagnosing my problem

[tr4boy]

folks,

I just rewired my 63 C10 with an american autowire kit. installed a new turn signal switch and upper bearing. the autowire kit is awesome and everything worked as planned. Been driving it for a couple months with no issues. I found a stock steering wheel and decided to replace the grant cheapy wheel that it came with. I got all the reproduction horn parts and proceeded to attempt the install this weekend. Didn't really go well. Not sure if the repro parts are not correct, but couldn't get it to the point where the horn button would have any movement. Eventually gave up and pulled out the horn contact.

Went to start the truck and no spark and the turn signals are now wonky. Right works okay but left runs both right and left. Neither work with the brake pedal under pressure. all fuses test good

Pulled the steering wheel again and pulled out the turn signal switch. No pinched wires or other signs of damage. the only new things are the turn signal cancel cam and a botched horn install.

Checked power to the HEI distributor - shows 12 volts but ranges all over the place with ignition on. still no spark though.

Pretty frustrated...any ideas?