If your multifunction switch isn't working in your 1987-1993 Ford Mustang, you may have a melted or damaged pigtail wiring harness. These harnesses can melt due to damaged wires or overheating components. Get it fixed quickly and easily with a new new 1987-1993 Mustang multifunction switch wiring harness from Latemodel Restoration. This rectangular 4 pin connector is the same as your factory harness making this splice in harness an easy install!
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