But, it would appear in your case, that either the EC2 is not grounding your injectors OR there is a connection problem between your EC2 and injectors. Since you can't dig into the EC2, I would make certain there is a connection between the EC2 and injectors.  You said you grounded the injectors and they clicked, did you ground them at the EC2 terminal - if you did then that would indicate the wiring connection is OK.  But, if you just grounded them close to the injectors, then that does not prove anything about your connectivity to the EC2 - only that you have power to the injectors.

I will be going out tomorrow to dig into my problem and will let you know what I find.

Ed