Answer
May 19, 2025 - 06:32 AM
If you're looking to wire rear Daytime Running Lights (DRLs) into your 2024 RAV4 Trail with factory LED lighting, here's a general idea of how folks typically approach this kind of retrofit:
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Find a power source that’s live with ignition – DRLs should only come on when the vehicle is running. Many people tap into the fuse box using an "add-a-fuse" connected to something like the ignition or existing DRL circuit.
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Use a relay setup – To avoid overloading circuits, run the DRLs through a relay. You'll need:
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One wire to ignition-switched power
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One to ground
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One from the relay to the DRLs
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Optionally one wire to the parking or headlight circuit if you want the DRLs to dim when lights are on
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Run wiring to the rear – Route your wires carefully along the vehicle’s harness path toward the rear light housings. Use proper grommets if passing through metal.
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Mount and ground the DRLs – Secure the lights and ground them to a clean chassis point.
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Test everything before final zip-tie cleanup.
That said, your 2024 RAV4 has a lot of CAN-bus-controlled lighting, so if you tap into the wrong circuit or overload something, it could throw errors or shut off power to lights entirely.
If you want to do this cleanly, a factory wiring diagram from a service manual would be your best friend. It shows you exactly where to tap safely without interfering with the body control module.
