Concerning the main electrical system of a motor vehicle or internal combustion engine. Consider a different tag for radios and other such systems.

learn more… | top users | synonyms

2
votes
0answers
28 views

Battery Draw while car is off at 3.24

I have a 2007 Saab 95 wagon... For about 6 months at random about once a month my car has been dead. After calling AAA and they told me there is a draw from the battery at apx 3.24 which is should be ...
11
votes
1answer
42 views

How can I tell which parts of my car are “By Wire”?

I've recently purchases a manual transmission 1.5 Honda Mobilio. Which claimed to be a drive by wire vehicle and I assume it really is, but I don't know how to tell if a car is drive by wire. I am a ...
2
votes
1answer
34 views

stuck in park no power to dash or windows

My Honda out of the blue would not go from park and so I had to use shift lock release and I have no power to my windows or dash what would cause this?
6
votes
1answer
57 views

Are all drive-by-wire cars completely (brakes, clutch, gas, steer) by wire?

I've recently purchases a manual transmission 1.5 Honda Mobilio. Which claimed to be a drive by wire vehicle and I assume it really is (don't know how to tell if a car is drive by wire). I am a new ...
4
votes
2answers
64 views

Start a circuit or device when you insert key in car ignition

I want to start a circuit in my car when I insert my key in car ignition and let it turn off when the key gets removed. I have Honda Civic 2007. Can someone just help me out as to from where do I take ...
8
votes
1answer
48 views

Disconnected wires near battery in BMW e46

I noticed a disconnected wire dangling next to the battery in the trunk of my 2005 BMW 330ci. It was actually a red and blue wire that veered off from the thick red one in the middle of the image. ...
6
votes
2answers
43 views

No low beams but do have high beams

I have a 2008 Toyota tundra that I replaced 1 headlight on thinking it was bad but then replaced it a second time and it worked fine for 1 day and the all of a sudden now I do not have any low beams ...
4
votes
1answer
51 views

Battery light flashing after alternator install on 2004 Ford Escape

I just put new alternator on my 2004 Ford Escape, and now my battery light keeps flashing on and off, and it will sometimes stay on. The battery has been checked and is charging 100 % . The alternator ...
5
votes
0answers
36 views

Car stalls/dies suddenly while driving and is not starting again

I own a Indian Make TATA INDICA Ev2 (CR4) Turbo Engine car. i did rebore recently and the milage was 1,30,000 KMs. after rebore first service of 3000 km is successfully completed and now i'm facing a ...
6
votes
0answers
28 views

backup lights stay on in park and switch off

I am working on a 2003 ford explorer sport trac.The backup lights stay on and I have to remove the fuse to turn them off.
9
votes
3answers
77 views

Multimeter - Basic Functionality and Howto

Multimeters I'm looking for some responses regarding multimeter basics for the site tag-wiki to point OP's at when we want them to use one. The question is; What are the basic functions of a ...
5
votes
1answer
47 views

Van makes knocking noise, even after it has been off for hours

I have an '05 Sienna. At 7 this morning, it was making a knocking noise when I went to leave for work. It had been off since about 9:30 last night. Clicked unlock on the remote and nothing happened. ...
8
votes
2answers
36 views

Old starter clicked, wont turn over engine. New starter wont even click - no noise at all

My old starter would click, but not turn the engine over. I got a brand new starter and installed it. The only two wires connected to the starter are completely different and can only be fit in the ...
9
votes
1answer
327 views

Locked out of my accord

My 2013 Honda Accord EXL the battery died the key fob won't open the door and neither will the manual key what can I do
5
votes
1answer
33 views

Burning air pressure switch

I use a 12 V air compressor at my car for air suspension which I understand is draining around 30-35 A. The problem what I have is overheating and eventually burning the pressure switch and ...
8
votes
2answers
39 views

Peculiar Interior Lighting Issue

Recently a friend of mine was driving a VW Fox (not new, I'm not sure what year but it was certainly 5+ years old) home in the dark with the lights on. Strangely, after a minute or two of driving all ...
6
votes
0answers
63 views

Why does my new tail light keep blowing the fuse?

I have a 1972 Honda CB350F and I got the new tail light from DimeCity. I think it was called the Buffalo style Medium tail light. The tail light turns on and works fine when I switch on the headlight, ...
4
votes
1answer
48 views

What are slip rings with respect to a cars alternator?

This is not a physics forum, and as such I don't expect answers to explain Faraday's law of induced emf (electromotive force), which is the basic physics principle behind how an alternator is able to ...
4
votes
1answer
40 views

Response to 2001 Toyota Carolla vvt code 1349: what should I do?

I got a vvt 1349 code on my 2001 Toyota Carolla. I have noticed a sharp decrease in fuel economy. Some people have reported that the oil control valve may be causing the issue. The oil control valve ...
6
votes
1answer
54 views

Help with Strange Intermittent yet predictable parasitic battery drain?

I'm having an issue where while testing circuits for the offending drain, I will see NO drain for about 30 seconds and then a 6-9 amp drain for about 10; rinse and repeat. Anybody have an idea what ...
3
votes
3answers
75 views

How can you use the headlights to tell the quality of your battery?

I understand that all headlights do dim briefly when you turn the engine on and that this is normal. I also believe that the headlights will dim more if the car battery is in poor condition. I hope ...
7
votes
3answers
50 views

2005 Toyota Corolla intermittant battery drain when not running

I have a 2005 Corolla CE with manual transmission. About one month ago the car would not start, and the battery was discharged to about 8.5V. Car had been not running for a couple of days but nothing ...
6
votes
5answers
246 views

Charging circuit

I have a motorhome and tow my car behind. Since I have to leave the car in accessory mode so the steering wheel is unlocked, the battery doesn't last a long time. I want to run a DS line from the ...
4
votes
1answer
45 views

Honda Civic starting problems?

my honda doesn't want to start, in the morning it starts with one crank but as soon as I drive and I switch off the car and I want to start again then it doesn't want to start. When I take a piece of ...
4
votes
0answers
31 views

Why would headlights stop working after turning over

I have a 2006 Pontiac G6. When I walk up to the vehicle and unlock it, the headlights turn on. After I get into the vehicle and turn it over, I cannot turn the headlights back on. Fog beams and turn ...
4
votes
2answers
27 views

Does 2000 Mercury Sable LS Premium have 12V available?

I'm going to be driving/living in a '00 Mercury Sable Sedan LS Premium 4D, which has a 24V electrical system. 100% of my equipment runs on 12V. Does this car have a high-current (>40A) 12V regulator ...
9
votes
1answer
47 views

Engine starter just won't stop starting

I have a 98 Toyota privia and upon starting it the starter just keeps going. This only occurs in drive and neutral. The vehicle also starts in any gear. When I start in park the starter keeps spinning ...
8
votes
3answers
196 views

Good car for full electric conversion

I am just going into my final year of mechatronics engineering, and as a project for my spare time I am looking to convert a car to fully electric drive. At the moment I am also toying with the idea ...
7
votes
1answer
43 views

Suzuki 2004 sv650s wiring

I got a 2004 sv650s Suzuki when I turn the key on the fuel pump does not come on and the CHECK light comes on on the dash. All the lights come on and the starter button does not work.All the fuses are ...
8
votes
1answer
147 views

How do I make all of this work together?

I have a friend with 1988 Jeep YJ. I'm not sure if this question is more appropriate for here or for Electrical Engineering. We want to mount this blender with an AC motor in it. I think it's 110 ...
7
votes
1answer
40 views

2000 Suzuki Grand Vitara 4x4 flashing

Whenever i engage my 4x4, the 4x4 light flashes. It didn't used to do this. Its annoying watching it flash. Any ideas what could be causing it to flash?
4
votes
2answers
225 views

LED lights on same switch [closed]

I'm trying to wire 4 low voltage LED lights in a vehicle. I would like all 4 lights to come on with one switch, and only 2 of the 4 lights with another switch. I could also use one switch if it has ...
6
votes
1answer
46 views

Battery light on after new alternator

Car: 2003 Honda Civic Si G1Wh dash cam, 400w amp, 4300k HIDs My alternator failed badly (stereo cutting off), no battery light. Replaced it with a reman Duralast, battery light is on. It shows 14.5v ...
9
votes
1answer
175 views

Are there downsides to making an accessory socket always live, if accessories are removed when not in use?

In some cars, the power line from the battery to the accessory outlet (aka cigarette lighter socket) is always live. In others, it's off until ignition. It seems pretty much random which cars are ...
7
votes
0answers
39 views

Fiat Siena EL 2001 was starting but jerking very bad whist running

Fiat Siena EL 2001 model It has a starting problem, I'm really desperate to get it running again, please help. The car was starting and running but was jerking very bad when in 2nd gear. The ...
7
votes
2answers
242 views

2004 VW Passat B5 Cigarette Lighter Broken - Common Problem

The problem I have been having with my VW Passat was that my cigarette lighter was not working in the car. It is the only one in the main part of the car (there is another one in the boot) and it ...
4
votes
1answer
51 views

Multiple issues with AUX input (Mazda 3 2007)

I experience a bunch of problems with my 2007 Mazda 3's electrical system: The most annoying issue is that I hear [a rather loud] engine noise when I connect a phone to the AUX (3.5mm audio jack) ...
9
votes
2answers
313 views

2007 Hyundai Elantra - Car beep when I lock the door no longer working

I got in a minor accident the other day. Cosmetically my hood was a little crumpled and the grill cracked. Functionally the only thing not working is the wireless lock beeping feature. Is this ...
6
votes
2answers
78 views

Battery and Alternator Pass Test - 2003 Mustang GT

I have a 2003 Ford Mustang GT, I had the battery tested and it will take a jump and start up so naturally I am thinking the alternator is bad. I take the alternator out and have it tested 3 times and ...
3
votes
1answer
54 views

2007 Ford Explorer - No Start, No sound, No power

My son's Ford explorer does not start on the first try but when he try's again then it starts. On the first initial start try there is no clicking, no sound like turning over, no dash lights etc. But ...
7
votes
2answers
90 views

Why do the batteries on some cars need to be hot-swapped?

By "hot-swap" I mean ensuring that the new battery is connected in parallel to the old battery while the old battery is removed and the new one is installed in its place. The idea is to ensure that ...
5
votes
2answers
79 views

Removing a car battery - order of wires explanation

Q1: When one removes a car battery, why does one start with the minus wire? Is it because if we remove the plus wire first it may touch the body of the car and close the circuit, causing a ...
4
votes
0answers
57 views

03 chevy impala- I have a bad misfire

When I push on the gas it hesitates to go. The check engine light starts flashing but once it gets rolling its gone. I change the spark plugs, put in a gas treatment, shot some B-12 in it and ...
3
votes
2answers
63 views

Battery Explosion - What are the reasons a battery would explode?

A long time ago, in a galaxy far, far away, I saw a battery explode. I was about 100 feet away and two mechanics were jump starting a Harley Davidson from a truck. The operator of the truck was ...
1
vote
2answers
31 views

Suddenly losing electrical power, but after jump start, test the battery and alternator, they seem fine

99 corolla seca. OK so first time it happened i was driving and i suddenly lost power (electrics / everything else) it just kind of putters a little and then that's it. I called roadside assist and ...
6
votes
1answer
47 views

Can I Mount auxiliary lights for Hero Honda Passion 2002 bike?

I am having a Hero Honda Passion 2002 model bike. The head light is very low and it works on engine power not on the battery, due to this riding bike in no light area with lots of ups and downs are ...
3
votes
1answer
29 views

2008 Mazda 6i - Do I Need to Flash the BCM?

Do I need to flash the BCM if I replace it? I have a 2008 Mazda 6i and the horn, brake lights and cruise control do not work. The repair shop says the BCM shows signs of water damage and needs to be ...
4
votes
0answers
47 views

Audi A6 C6 on board computer is off

I'm not sure if it's something wrong with on-board computer or I just don't know how to turn it on. When the car is started the display is completely off. and only turns on sometimes when some kind of ...
1
vote
0answers
35 views

12 v RV solar system ground wire size for minmum voltage drop [closed]

I have been too ignorant about wire sizing but now trying to correct it. 280w of panels - 15amp potential max. power for the two - controller (set to 14.4 now) - 12v AGM 200 amp/hr battery. 22 ft new ...
2
votes
0answers
39 views

2001 Jeep Grand Cherokee - What is Difficulty in Replacing the Negative Battery Cable in this Vehicle? [closed]

We have replaced the alternator and battery but still have problem with starting. It takes a jump and starts every time but after you park and come back, it won't start again. I has been to the shop ...