7747 Check engine light on but no codes

[NorCal69]

I just finished up my third TBI swap.
I purchased a very lightly used Howell kit for an AMC 304 V8 and installed it on a Buick 231 V6. Long story, but the previous owner could not get his engine to run properly, pulled the kit off and went back to a carb setup.
The injectors were swapped to 4.3 size and the an appropriate prom chip installed for the engine. The engine runs excellent but the check engine light stays on constantly.
If I jumper the ALDL plug to flash for codes the light does not flash, it just stays lit the entire time.
When hooked to my Snap On "brick" scanner the computer is not throwing any codes.
Any ideas as to what would cause the check engine light to stay on constantly?
Asking Howell is a waste of time as I am not the original purchaser of the kit.
Attached is a video of the engine running.