Greddy does make a harness that works, so does hks i have both of them the one i am using rite now is the hks harness for p10 g20 because i now have a hks turbo timer, if you want the greddy turbo timer harness contact jgy customs thats who i bought it from ***just noticed you have a b14 i believe you have to rewire a wire or two for the harness to work***
contact jgy and they can help you out with the info.
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