Fuse box

So my car wasn't starting and it ended up being the battery terminals so i changed them and now my car works fine but the stereo wont turn on. I checked the fuses and they weren't blown but when i checked them with a circuit tester the light wouldn't come on. I checked all the fuses with a tester and some had power and some didn't but none were blown. is there any way to restore power to those fuses or am i going to have to replace the fuse box?

My car has 140000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Hi and thanks for contacting YourMechanic. The question to ask is, was your stereo working before you had a battery issue? If your stereo was working before you changed the battery terminals, then either the terminals may not have made a good connection or there may have been a ground wire that was not hooked up. Sometimes when hooking up battery terminals, the spark serge from the battery could cause circuits to overload. It is possible that the circuit in the fuse box may have been burned. If that is the case, then you would need to fix the fuse box terminals. Also, it is very common for Neons to have the stereo go bad. Remove the stereo and check the connection harness. See if there is power to the harness with the key on the On position and Accessory position. If there is no power, then your fuse box is the issue. If there is power, then the stereo failed. If you need assistance in troubleshooting your stereo, a YourMechanic certified technician can be dispatched to your location to perform a car stereo is not working inspection service and diagnose this issue for you.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

Look for the fuse box in closets, hallways, mudrooms, crawl spaces, basements, utility rooms, or laundry rooms. Fuse boxes in more prominent locations might be covered with a wood panel or picture meant to disguise the appearance of the box cover or door.
The secondary under-hood fuse box is next to the battery.
Most vehicles are equipped with two fuse boxes. One is located in the engine compartment and is used to protect engine components such as the cooling system, anti-lock brake pump, and the engine control unit.
Finding Your Circuit Breaker or Fuse Box

Keep an eye out for a metal box, usually flush with the wall. The box will have a metal door to keep the breakers or fuses protected. Check your garage for the circuit breaker or fuse box. It might also be in a storage room, utility room, the basement, or a hallway.

(2005 Dodge Neon) There`s actually two fuse boxes. One under the hood on the drivers side, and the inside one mentioned above by Justin. The power outlet fuse is under the hood. Its a 20 amp blade fuse at the #14 position labeled P/OUT.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Passenger seat heater not working properly.
ANSWER : Hello and thank you for contacting YourMechanic. The book says that you can use a 15, 20, 25, or 30 amp fuse. The power to the heaters are operated through the wiring to the main harness. There could have been a wire tied into it to make the seat work on the same circuit as the driver seat. This is common to find in the vehicles.

You can try putting a 15 amp fuse in the slot and see if the seat works. Try to avoid using a high amp fuse for if there is a problem with the heater you don’t want to burn it. If nothing seems to work, then the heater in the seat has failed and needs replaced.

If you need further assistance troubleshooting your vehicle, then seek out a technician, such as one from Your Mechanic, that can assist you with a seat inspection at your home or office. Best of luck.

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Moisture in fuse box causes fuel pump fuse malfunction
ANSWER : For this, Silicone spray is one tool I personally like to use especially on rubber or silicone seals. The spray will leave a water-tight film on the electrical component and offers a moisture resistant coating. If you would like to have this checked, an expert, like one from YourMechanic can come to your car’s location to inspect the electrical system in order to scope the problem out and pinpoint any problems.

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Engine Fuse Box
ANSWER : Yes, you should replace the entire fuse box. The reason for this is that it is quite likely that when the box burned other connections inside the fuse box were also damaged. This will in fact affect the vehicle starting as well. I would suggest having an expert from YourMechanic come to your home to diagnose your starting issue and replace your fuse box if necessary.

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Car blows ecm run/start fuse after starting and then dies replaced fuse and repeats
ANSWER : Hi there. Typically when this issue occurs, damage will be instant – meaning if it’s going to damage the ECU, replacing the fuses would not help start the vehicle. So, at first glance, I would assume the ECU is OK. What is more likely is that you have an exposed wire somewhere that is causing the fuses to pop. Trying to diagnose these issues can be tricky sometimes, so it might be a good idea to have a professional mechanic complete an electrical problems inspection to isolate why you’re having these issues and recommend the right repairs.

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I got a code P0191 for the fuel rail pressure and a code P0237 for turbocharger boost.
ANSWER : Hi there. When the battery was arched, the power surge had went through the vehicle and caused some circuits to fail. If right after the power surge happened and now you have a code for the fuel pressure and the turbo, I recommend replacing the fuel pressure sensor on the fuel rail and the barometric sensor on the intake. This should take care of the idle issue and the cut outs along with any problems with performance issues. If you need further assistance with your engine stalling after arching the battery, then seek out a professional, such as one from Your Mechanic, to help you.

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Cant find the 33rd fuse in fuse box for drivers power seat
ANSWER : Hello, thank you for writing in. There are two fuse boxes located on the vehicle. One is under the hood in the main fuse box. It controls and protects the engine components. The other fuse box is located inside the cab of the car. This interior fuse box controls the components inside the cab, which includes the radio, windows, seats, and other driver controls. It is located below and to the left of the steering wheel. You will find fuse 33 there, and it too will have a diagram on the cover to show you which fuse it is.

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FORD CMAX Fuse question. 2014 Ford C-Max
ANSWER : Hello,
Ford (and other manufacturers as well) usually offer the small, specialized electrical parts for repairs such as you describe. Check with www.fordparts.com for your specific needs. For assistance with this project, I would recommend an electrical system problem inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

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have to push on main fuse box to get the engine to start and idol
ANSWER : You need to first check all the fuses, the connections at the battery cables, and the connection at the cable to the fuse box. My guess is that there is likely a loose connection at the fuse box or at the main battery cable to the starter, and pushing on the fuse box moves everything in just the right way to make a better connection. It’s also very possible that there was another fuse blown when the other work was being done. If the connections are good, and the fuses are all good, then you should have a professional technician, such as one from YourMechanic, diagnose the no start issue that you’re having.

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