Skip the auto shop - Our mechanics make house calls

Q: Electrical problems with car

asked by on

I had an electrical problem and ran a new ground wire. My car still has the same problem and now none of the electrical systems in the car work.

A: Hi there. On the right front wheel well, th...

Hi there. On the right front wheel well, there are a series of fusible links which distribute battery power to all of the vehicle's electrical systems. One is gray and is labeled "fusible link K," which supplies power to all of the interior electronic fuses in the fusebox. The power needs to be checked at the fuses of the interior accessories that are not operating to see if they correlate with the power loss. If power is present to all of the fuses that connect to the accessories not operating, then the link is ok. If not, the link will need to be replaced. If all non operating accessories have power, then the problem still lies in the grounding circuit.

By safely removing the negative battery terminal from the battery, the ground circuit can be checked for continuity with a ohmmeter. If the resistance is near 0 ohms, reconnect the battery. A voltage drop test needs to be conducted to the chassis ground and also from the chassis ground to the battery to ensure no excessive resistance is present. The voltage drop readings should not exceed 0.1 volts. All ground connections should be checked and cleaned if the ground side voltage drop is above 0.1 volts. You may want to enlist the help of a mechanic, like one from YourMechanic, who has the training and equipment to diagnose the electrical system issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: 2002 Buick Rendevous won't start

In addition to having a working battery, you will also need a good ground. Make sure all of the electrical connectors are tight and that the battery was installed properly. There are other systems to make sure are working correctly,...

Q: Ignition switch not working

It sounds like you have used up all the borrowed time from a failing part. The ignition cylinder switch assembly will likely need replaced, especially if all keys to the vehicle have the same problem.A qualified technician, such as one...

Q: Rough idle

There are several possibilities for a car to have rough idle. You may have a bad mass air flow sensor. I would suggest having the system checked with a scanner to see if all the engine sensors are reading the...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...