How-to
2001 Ford Crown Victoria Corner Lamp Turn Signal Conversion
The corner lamps on a Crown Victoria do not flash with the turn signals, so traffic approaching from 90 degrees sees no turn indication. This job wires the corner lamps into the factory turn signal circuit so they flash with the signals and hazards.
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Step 1
Remove the corner lamp. A nut under the trim panel that runs along the radiator support must come out first.
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Step 2
Probe the three wires at the corner lamp with a test light and a needle to find the turn signal wire. The owner reports that on this 2001 the white wire was the turn signal wire on the passenger side harness and the green wire was the turn signal wire on the driver side.
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Step 3
Open the wiring loom to reach the turn signal wire. The owner used a knife to peel the loom back.
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Step 4
Prepare the new wire by running it inside a wire loom and wrapping it with electrical tape, to keep an OEM appearance.
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Step 5
Identify the two wires in the corner lamp harness, a brown wire and a black ground wire. The ground wire is the one to cut and splice into the turn signal wire.
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Step 6
Feed the new wiring in from the corner lamp's position. Route it under the fender and up in front of the radiator support.
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Step 7
Follow the new red wire along its route to the turn signal connector. The factory turn signal wiring sits at the lefthand side of the last photo, with the new red wire alongside it.
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Step 8
Splice the new wire into the corner lamp ground, then cut the ground where it runs back toward the frame.
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Step 9
Splice the other end into the turn signal wiring. Wrap the splice with electrical tape and secure the run with zip ties.
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Step 10
Check the corner lamp with the turn signal on. The owner reports it works, and the photos end here with no reassembly shown.
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