you not to run a switch system, basically a microswitch that clicks on when you close the throttle, then then goes to a little control box, which has a feed from the vacume pump for the brakes, then a pipe to the DV, i have never done one on a sierra though.
Quick google search should give you some answer mate.
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Dan.
M.A.Developments 500 spec engine, GT30, Autronic, 1000cc injectors, ST Inlet ETC.....
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