When doing swaps, it's usually easier to use the harness of your transplant vehicle, splicing into it when necessary.
That would mean using all the harness from the DX (which apparently was already wired for MPFI) and just swapping in whatever you need from the Insight's harness.
In this case, though, I'd tell you to use the Insight's harness, engine and dash, but not chassis. You'll just be splicing your chassis's harness into the Insight's other parts.
I guess what I'm saying is that since the Insight's wiring is going to be so much more in depth and different than the CRX's, it's going to just be less of a headache to use the majority of the Insight's harness and splice in whatever CRX parts you need for the engine/ECU and dash/cluster/etc.
You are using the Insight's cluster, right?
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