The wiring harness only reaches so far, it is designed to attach directly to the distributor because there are other sensor inputs as well hooking to the manifold off the same main harness. I don't really want to cut up the weather pack connector lines and extend them. I'm not positive the external module has the same connector either. Ford re-did the setup for later models after the recall. There are other issues documented with the external models as well, ford jumped the gun when going to the external.
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