^^ Ditto
I've never opened up the harness but I beleive its shielded wire. That is, the inner core is insulated by a wire jacket (like a coaxial TV cable) which are grounded at both ends to reject noise from the outside. If the ground is compromised, the sheild is ineffective. So either you lost the ground or the connection is bad.
Why did you move it out from under the intake?
Then again maybe you added too much "spice"!!
". . . with both wires spiced . . . ."
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95 Cam, V6 1MZ, Auto A541E, LE >245,000 miles!