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HI all! I am currently doing a BPT swap with my mx-3. I have the BPT wiring harness and the ecu. Now, i have incounter a problem. I have pluged all the plugs into the engine but there are some extra plugs where i cannot seems to find where they go. Just wondering, is there extra plug with the wiring harness that does not need to be plug in? Hope to here back from someone who has done the swap. Thxs alot

seeing as how i didn't use the gtx harness/ecu setup, i don't know much about it. one extra plug will be for the knock sensor unless you snagged one from a gtx.

I think there were 2 or 3 that was around the battery area that did not hook up to anything. don't worry, it runs right. Just look over all the plugs. I thought the same way and thought it should plug into something. Hook it up and just run the engine.