Q: I crossed the lines on one of the new batteries & SPARK went the post, I screwed the pooch...

asked by on

Yes, I did and I AM ASHAMED. So, I had installed the drivers side battery with no problem and then I blew it. In my haste and lack of attention to detail, I connected the battery the WRONG WAY. Negative to Positive post and then the Positive to Negative post... FLASH. Whats next guys? Battery must be toast. I don't know what electronics I may have fried or fuses that may hopefully saved them to check. Any help would be appreciated greatly. It's an inherited family vehicle that I know nothing about. My best guess New Battery and cross the fingers, then check fuses?

My car has 144000 miles.
My car has an automatic transmission.

I have seen many different outcomes when it comes to hooking the battery up backwards. If you disconnected the cables as soon as you hooked them up wrong you should not need to replace the battery. Once you hook up the battery correctly, try to start the vehicle to see what is not working and go from there. You may have blown fuses and some wiring issues. Through trial and error see what happens and try to pinpoint any issues. If you need some help with checking for or repairing any issues, consider YourMechanic, as one of our mobile technicians can come to your home to diagnose and service your battery firsthand.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I crossed the lines on one of the new batteries & SPARK went the post, I screwed the pooch...

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: About how much does it cost to repair a left front axel that caused my transmission fluid to leak?

If the CV axle shaft is truly bent, as apposed to having just damaged CV joints, such damage will typically only happen in a collision. The axle shafts are very thick strong steel and the impact required to bend a...

Q: My cars speedometer just now started wiggling and going back and forth and sometimes to 0 mph.

I would recommend changing the speedometer. I recommend this because the speedometer on older vehicles from the 90s have a manual gear that turns the it. It seems as if the gear has broken and only contacts the needle some...

Q: The negative post on battery wont let me connect it. It sparks and smokes unless you disconnect the wire from solenoid going from the battery to the starter.

Hi there. When the battery cable is hooked up and sparks with smoke, the question to ask your self is if the wire is getting hot. If the wire is getting hot, then the starter solenoid has melted the contacts...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...