Radio installation without a wiring harness

Asked by Guru6MRPF Apr 06, 2020 at 01:35 PM about the 1999 Mercury Grand Marquis

Question type: Car Customization

Someone cut the harness out and I'm not sure what
all the wires are. I looked up a diagram for it but it
didn't work. Where is the best place to do research
on a wiring harness for the radio to find out what
color codes the wires are?

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1999 Mercury Grand Marquis

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