2002 Ford F350 OEM stereo harness ident help please.

[sujumptd]

I've installed an after market stereo in my truck and connected all the wires correctly to the new stereo but on the original 2002 Ford F350 OEM harness are two wires left that I don't know what they are. They are a thin black wire and a Red w/ black stripe on it. Can anyone please tell me what these are and what are they used for if anything?

Thanks in advance.

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[CrossoverOre 10+ year member]

sounds like the amp reference ground and illumination wires.