I got spark! Thanks everyone for your helpful advice.
Like MopedGarmy and Don Ruggles suggested, I made sure that my black wire was on the first coil. I didn't know, but the first coil is the one at the top and the side screw on a CEV 6309 coil is to attach an ignition wire (in my case the black one) to the first coil. The tail light wire (in my case, it was blue) attached to a bottom mounting screw for the coil, which grounds to the chassis.
So happy, thanks again!