Do you pride yourself on knowing your car and performing basic repairs? If so, here’s some automotive electrical work you should know how to do.
If you’re car-savvy, you shouldn’t need to take your vehicle to the shop just to replace a busted taillight or test a waning battery. Here’s some automotive electrical work you should know how to do if you want to save some money and expand your automotive expertise.
Replacing Lights
Faulty lights are both a safety hazard and a legal concern. Replacing headlights, brake lights, or turn signals should be part of any car owner’s skill set.
Start by identifying the correct bulb type for your vehicle, which you can find in your owner’s manual. After locating the light housing, disconnect the power connector, remove the damaged bulb, and insert the new one. You might also need to troubleshoot the three-cavity connector and replace it if this connection is the issue. Always test the light before putting the assembly back in place.
Swapping Out the Battery
A failing car battery causes starting issues, but swapping it out is straightforward. Begin by turning off the engine and removing the negative cable, followed by the positive one. Loosen the clamp securing the battery and lift it out carefully. Place the new battery in the tray, secure it with the clamp, and reconnect the cables in reverse order—positive first, then negative.
Testing the Alternator
The alternator is what charges your battery and runs the electrical systems in your car. To test it, use a multimeter to measure the voltage while the engine is running. A healthy alternator should show a range between 13.8 and 14.4 volts. Lower readings could indicate a problem.
Exchanging Spark Plugs
Spark plugs ignite the air-fuel mixture that powers your car, and degraded plugs can reduce performance and fuel efficiency. Your car needs new spark plugs roughly every 30,000 to 90,000 miles, depending on its make, model, and use. To replace them, start by referencing your vehicle’s manual to identify the correct plugs. Disconnect the ignition wire, unscrew the old spark plug, and install the new one. Tighten it carefully to avoid damage. This simple maintenance step can drastically improve engine performance.
Basic Wiring
Understanding basic wiring allows you to handle minor electrical repairs confidently. If you encounter a loose or damaged wire, start by disconnecting the power source to avoid electric shocks. Repair the wire using a soldering iron or replace it using factory-matched wires when necessary. Secure the connections with electrical tape or heat shrink tubing to prevent further issues.
You should know how to do this common automotive electrical work if you’re car-savvy. Not only will it save you time and money, but you’ll also develop a deeper understanding of your vehicle.