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electrical wiring

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How to Build Weather Pack Connectors
Weather pack connectors started off as a Delphi product and quickly became commonplace in the automotive world. Most wiring systems use weather pack connectors in their assembly due...
How Can the Light Bulb Wiring Become Damaged?
Your car is as much electrical as it is mechanical. Wiring harnesses snake their way around the engine bay, and throughout the cabin of the vehicle. Most of your accessories run on electricity, and even...
How Often Do Spark Plug Wires Need to Be Changed?
Spark plugs provide the electricity necessary for combustion to happen by igniting atomized fuel in an engine's cylinders. However, they need a constant supply of electricity to do that. This is the job...
How to Buy a Good Quality Ignition Cable (Spark Plug Wires)
Spark plug wires connect the spark plug to what they’re creating a spark in. Whenever you are changing out your spark plugs, it’s a good idea to check on those spark plug wires to...
How to Buy a Good Quality Tachometer
Tachometers are used to let the driver know when to shift gears in a manual transmission as well as giving additional information about traction or slippage; as well as giving a quick overview...
How to Buy a Good Quality License Plate Light
Whether you are replacing a license plate light, or adding one to your vehicle to be sure that your license plate is visible in all sorts of weather, buying a good quality...
How Long Does an Ignition Cable (Spark plug wires) Last?
The ignition of a car is an essential part of a good running engine. Each time that you turn the key of your car over to crank it, the ignition wires will...
How Touch-Activated Car Door Locks Work
When small digital systems appeared in the 1980s, the car industry was quick to pick up and use them. In short order, Ford developed the first computer-controlled keypad door locking system in about 1980. A...

Related questions

Question
No crank/No start and reads No Bus on dash, PRDNL123 Illuminated. 2004 Dodge Stratus
Hi there - first thing to check is for problem codes, whether the Check Engine light is illuminated or not. Any codes found here will help guide diagnosis. Your car, as does virtually all cars in this century, utilizes a...
Question
2010 Chevy Cobalt shuts off while driving
The power relay provides power to several vital fuses. The relay is turned on and off by an on board control module. A problem with this relay or any part of its control circuit, can result in a vehicle that...
Question
Tachometer has been stuck at maximum since winter started
Miniature stepper motors are often used in the tach application to position the pointer. If so equipped, the stepper motor is soldered onto the cluster PCB. It is not too difficult to remove them, and solder in a new one,...
Question
Mis-fire
Carefully check the EGR system. If EGR is stuck open you can get global misfiring. Check integrity of PCV system. The fuel system needs to be ruled out including the mundane, but real, possibility that you have a tankful of...
Question
How do I fix O2 sensor heater cylinders 1-6 circuit malfunction?
The oxygen sensor heater is integral to the sensor assembly itself. It is not separately serviceable. If the heater tests bad, the entire sensor is replaced as an assembly. In your case, P1193 refers to an oxygen sensor which is...
Question
Peugeot 206 cutting out whilst driving 'Not idling??' 2004 Peugeot 206
Hi there - this problem could be in the wiring, with a possible electrical short that takes out power to the ignition. Depending on where the stereo installer took power for the new system, there may be a connection which...
Question
Headlights just stopped working
If manipulating the original switch caused the lights to turn on and off, that would suggest that the rest of the headlight circuit is OK. If you replaced the switch and yet you have the same symptom that you had...
Question
I can't find the correct stereo wiring diagram . I have two gray cords and a pink cord that's not connected to anything .
Hello, thank you for writing in. Wiring diagrams for your vehicle should be relatively the same as other vehicle similar to yours. See if you can find one that matches for another model or year. If your stereo is lacking...
Question
Gear stuck on park. Brake lights dont turn on. Brake light switch has been changed the problem still remains.
Hello, thank you for writing in. The vehicle is likely having a connection issue somewhere around the switch. Since you have a voltmeter or test light, you will want to test for power leading up to the fuses, and then...
Question
Stereo quit working after hooking up a code reader in a shop.
Check the fuses to the radio and see if they are burned. If so, then replace the fuse. If the fuse is good, then the wiring was disturbed under the dash and may have knocked loose the radio wires or...
Question
Car died will start with jump but dash lights come on with keys out and turn radio on the back wiper comes on.
Hi there. Check all of the ground circuits in your vehicle for any loose or burnt ground wires. A loose or burnt ground wire will cause multiple circuits to malfunction and act like there is a short in the system....
Question
Speedometer/odometer quit working.
The speedometer is electronically controlled. Typically, there is a mini stepper (positioning) motor mounted on the instrument cluster PCB and it receives a signal from a speed sensor within the transmission. A wiring harness interconnects these components. The speed sensor...
Question
Electrical problems with my car. The power windows, mirrors, infotainment, and the driver seat all aren't working.
Hi there. Since all of the items are located in the cabin area of the vehicle, look for a loose or broken ground wire from the cab to the frame or fuse box. There could be a pinched wire in...
Question
I have a 2000 Volvo S40 my neither my turn signals or hazards work. I can get the turn signals to work by pressing the hazards button.
Hi there. Check the wiring from the turn signal switch to the relay and the wiring from the hazard light switch to the relay. There is a short in the wiring causing the lights to function off each other. The...
Question
How much voltage go in to fuel pump, 4 cyl ? 1988 GMC S15
Hi there - virtually all automotive and light truck electrical systems run on 12 volt components these days. Your fuel pump will be 12 volts as well. Perhaps the question you are asking is how many amps the fuel pump...
Question
I have a question for you I have a 2007 Honda Civic. One brake light is not working the bulb seems okay. What could be the problem?
If the brake light bulb is good, then check the wiring to the brake light that is out and look for any broken wires or loose grounds. A broken wire or loose wire will cause a circuit to fail as...
Question
Parasitic drain 2005 Chevrolet Tahoe
Hi there - this could still be the body control module or one of the engine management functions that "warms up" things, and should be shutting them down - but isn't. It could also be an ignition relay - stuck...
Question
My rear and front lights are out on my 2001 mitsubishi montero sports there was a small fire in the steering column.
In order to locate the cause of the short the mechanic like one from YourMechanic would need to charge time and materials to locate and repair the short and fire damaged materials. You would be charged for the first hour...
Question
I put a 4x4 (Jell Type Marine) battery in my sedan. Car starts and runs but loses power and completely stops.
Hi there. The battery is not holding a proper charge. Check the alternator and see if its producing a voltage of 13.5 to 14.7. If so, then have the alternator checked for the amperage that it puts out and see...
Question
Won't start unless I wiggled the solenoid harness. Extreme break pressing or shifting through gears several times.
There is a ground or broken wire issue in your vehicle causing the engine to not start. Check the harness to the solenoid and see if there is a loose wire or a broken wire. If the wiring is good,...

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