FRPP wires solid or spiral core???

[TEXSN95]

MSD suggests not to use a solid core wire with the msd6a box, and after I put it on my radar detector is picking up something from the ignition and won't work right. I have frpp 9mm wires that are about a year old. If the frpp wires are solid core then thats probably the problem. Are the msd spiral core wires any good?

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Clint L.
White 95 Cobra #3637
58cc GT40X heads with mild porting, Crane 2031 cam, FRPP 65 TB, 1.7s, Cobra intake, homeade cold air, 155lph, pullies, Tokico Illuminas, C springs, GW lower control arms, Steeda CC plates, aluminum driveshaft, Steeda quadrant, MSD6A, Mac shorties, off road hpipe, 2 1/2 ultra flows w/ dumps, R hood, Euro clear corners, stock 3.08s
13.61 @ 104.7 w/ 2.22

[y2kcobrar]

According to Ford Racing the wire sets for the 5.0L engines are spiral core.
http://www.gefracing.com