xma1080, if you had read the earlier posts you would see that his car is a Quad 4 which has no "wires", they use boots.
Also his issues are only when the cruise is used, so I would say the problem is within the cruise system or its wiring.
Also thiers many things besides plugs and wires that can cause a car to misout at highway speeds.
Bad fuel, clogged injectors, clogged fuel filter, bad injectors or thier harness wires.