2009 Ford KA Plate Lights Not Working - Troubleshooting Guide

Both plate lights out on a 2009 Ford KA usually means either both bulbs are dead or you’ve got a wiring issue—less likely to be a fuse, since other rear lights would also be out. If only one was out, I’d say bulb or socket. Since it’s both, start with bulbs, but keep wiring in mind, especially if the car’s seen moisture or hatch wiring flex.

Most likely culprits

• Burnt-out bulbs — Both can go at once, especially if they’re the same age.
• Corroded sockets or bad wiring — Common on hatchbacks; water gets in, or wires break near the hinge.
• Blown fuse — Unlikely unless other rear lights are dead, but possible.

How to narrow it down

1. Check other rear lights — If tail lights work, fuse is probably fine. If not, check the fuse.
2. Pop out the plate light covers and inspect bulbs. If filaments are blackened or broken, replace them.
3. Test with new bulbs — If they still don’t light, move to wiring.
4. Check for power at the socket with a test light or voltmeter (lights on, probe contacts). No power means wiring issue.
5. Inspect sockets and wiring — Look for green/white corrosion, broken wires, especially where the harness flexes with the hatch.

Possible parts (if needed)

• License plate light bulbs
• License plate light socket
• License plate light wiring harness

A few questions

• Do your tail lights and other rear lights work normally?
• Have you had any water leaks or electrical issues in the hatch/trunk area?
• Did the plate lights fail at the same time, or did one go before the other?