Drag out the wiring diagram and start tracing wires for problems. While you're under the dash, there's one last test to make absolutely sure that the circuit between the relay and the horns is good.

We use our Project Black Sheep Dodge truck, fitted with HID headlights, to show you the electrical wiring basics of installing your own off road lights inside 4-Wheel & Off-Road Magazine.

Car Thieves Use Headlight Wire Hack To Steal Vehicles Modern hot wiring gets around improving key security by just plugging directly into the car ...

There’s a new form of keyless car theft that works in under 2 minutes As car owners grow hip to one form of theft, crooks are turning to new ones.

News Car Tech This Stupid Headlight Switch Circuit Board Is Setting BMW E46s on Fire Moisture and electricity don't mix. Andrew P. Collins Published Feb 28, 2025 8:00 AM EST ...

The wiring harness connected to the prefuse box in the engine compartment might not be properly secured, which could deactivate fused components, such as power steering assist, headlights, and wipers.