Well lets put it this way the plugs on the harness aren't clipped together and can't be they barely go in and no audible click is heard secueing them not does it feel secure, I check the ficm every time I remove it and it's pins look goodBased on what you said (harness wiggle test), it sounds like a likely problem. Trouble is, over the internet it is hard to rule out a bad connector on the harness or even issues with the FICM plugs. Removing the FICM to get a close look at the plugs/connectors would be good. Check for bent pins. Checking continuity on the harness wires would be good also, if you have the tools and room to do so.
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