Blinker not blinking

[jlwdvm]

I have a AAW Power Plus 20 wiring harness in my 69 firebird project. My headlights work fine, the motor runs fine, etc. I am going to use the front turn signal-parking light area for a brake cooling duct opening, so I purchased a set of halogen headlights with LED turn signals in them. When the turn signal is supposed to be on (GM Tilt rebuilt column) I have 12 volts and the turn signal comes on, but doesn't blink. Thoughts?