No electrical stuff working in my car

1999 NISSAN ALTIMA
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KSHYENT
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A while ago i put the battery in wrong now in my defense both the cords were red so i wasn't sure which went where and i tried to start it and i saw smoke and smelt something burnt like and it was coming from the stereo area i checked and replace some of the fuses but none of the electrical appliance ( a.c,radio,power lock/windows,signal,brakes wipers & horn) The alternator is also bad but i dont think that's the problem because before hand the alternator was bad and the stuff worked today i looked and saw there was about 3-4 wires ( orange,white,red,black) loose that were coming from the horn and looked as tho was suppose to be connected to the fuse panel inside the car .Can anyone help me and tell me what to do other than call a electrician i dont have the funds and i cant find a job so maybe we can tackle it together i know my way a bit around a car u can email me or send me your email address and i would respond THANKS in advance

[img:8969ac8691]http://www.2carpros.com/forum/automotive_pictures/361402_DSCN5753_1.jpg[/img:8969ac8691]
Jul 17, 2010 at 1:33 AM
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KHLOW2008
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Hi kshyent,

Check the fusible links underhood. Those are the main fuses and reverse connections of the battery would blow those fuses first.

Are there any components that is working?
Get an ohmmeter and/or test lamp to facilitate testings.
Jul 17, 2010 at 5:33 PM
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KSHYENT
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sometimes the air conditioner would come on and the horn would sometimes too but thats very rare havent turned back on for about a month or two
Jul 24, 2010 at 3:50 AM
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KHLOW2008
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Are you able to start the engine?
How do you know the alternator is bad?
Have you checked the fuses and ground circuit connections?
Jul 24, 2010 at 8:44 AM
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KSHYENT
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Yes, the engine does start once the battery isn't dead .

I know the alternator is bac because the battery dies a good much .

And no i haven't checked the ground circuits maybe you can instruct me on how to do that
Jul 24, 2010 at 2:00 PM
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KHLOW2008
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After starting, get the charging rate checked first. If the alternator is charging but not getting to the battery, the problem is similar.

Is the cahrging indicator showing in the dash when engine is running?

Does it show when ignition is turned on?

You need to get the charging system fault resolved first as it can cause lighting and electrical component faults.
Jul 24, 2010 at 11:27 PM
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KSHYENT
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No nothing in the dashboard work none of the indicators . And the alternator was always bad but the electrical stuff just stoped working after the battery being put on incorrectly and then the smoke came from inside the car
Jul 24, 2010 at 11:59 PM
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KHLOW2008
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This indicatres a power supply failure.

Main power supply is to Fuse E ( 100 A) in fusible link biox at left side of engine compoartment.

Use a test lamp to test fuse A, B, C and D for battery voltage. If no voltage are available, check Fuse E.
Jul 25, 2010 at 12:44 AM
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KSHYENT
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so even though my car still starts when a charged battery is in .. the main fuse which im guessing is the battery fuse can be broken and when i was testing the fuses a while back i saw that it didn't light up but the car started so i just figured it was the test light
Jul 25, 2010 at 10:04 AM
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KSHYENT
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Okayi checked the main power supply fusewith atest lamp its okay and also my car starts so it can't be the 100 a fuse If you need anymore information or need me to take pictures of the fuse boxes the one in the car and in the hood i can
Jul 25, 2010 at 1:55 PM
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KHLOW2008
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We don't need any pictures yet and I guess we have to get to serious and step by step trouble shooting.

Is battery voltage present at all the fuses A, B, C and D ?

Which of the following components works?

1. Headlights.
2. A/C blower.
3. Hazard lights.
4. Horns.
5. Brake lights.
6. Park/taillights.

Engine could be started with aid of jumper, with key or by jumping the starter solenoid?

Have you checked the ground circuit connections? Especially those behind the headlights on the inner fender.
Jul 25, 2010 at 2:57 PM
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KSHYENT
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The Headlights work fine .
The Breaklights work fine.
Also, the park/taillights work fine

everything else mentioned isnt working at all
Jul 25, 2010 at 3:27 PM
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KHLOW2008
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Do you have battery voltage at Fuse A?

At ignition switch, check for battery voltage at the White/Blue wire with ignition switch turned ON.

Do you have battery voltage at Fuse # 1, # 2, # 9, # 10, # 13 and # 19 in underdash fuse box?
Jul 25, 2010 at 4:18 PM
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BILLGRANDPA
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My car is doing same thing but tail lights stay on all the time
Sep 27, 2019 at 5:25 AM
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STRAILER
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Do you have battery voltage at Fuse # 1, # 2, # 9, # 10, # 13 and # 19 in under dash fuse box?

This guide can help with the fuse locations below:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what happens.
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Sep 29, 2019 at 12:48 PM