Questions tagged [electrical]

Concerning the main electrical system of a motor vehicle or internal combustion engine. Consider using the [electronics] tag for radios and other such systems. Use the [electric-vehicle] tag for questions about electrical powered vehicles and their unique systems.

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68 views

Mk1 Ford Focus green residue on reverse light bulb

When changing my reversing light bulb I noticed green liquid on the bottom of the old one. The new bulb won't work at all. Do you think I just need to clean the socket out (and if so, do I use water?) ...
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1answer
4k views

turn signal blinks wrong direction

I have a 2009 Jetta SportWagen TDI (Mk5). When I turn on my right turn signal, usually the left turn signal turns on instead. I'm pretty sure it is a problem in the lever arm. I can consciously ...
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1answer
40 views

Should I use an “original” electrical harness to avoid problems?

I have a 2017 Subaru Legacy. A month ago U-Haul installed a trailer hitch and electrical kit. I used my 5 by 8 trailer (bought at Tractor Supply) happily for three weeks. Then one day the car did ...
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49 views

How to/difficulty of transferring immobiliser related wires in an ignition switch harness?

Was replacing ignition switch and realised it had an immobiliser related wire on it which needed to be transferred over. I have no real knowledge of electronics. How does one go about moving these ...
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2answers
2k views

Dodge Caravan headlights; 1 on with running lights, other on with headlights

I have a 2002 Dodge Caravan. When the running lights are on, one of the headlights is on. When I turn the headlights on, they switch; the one that was on with the running lights turns off, and the ...
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0answers
37 views

Car is dead, but battery is (apparently) fully charged?

My car seems to be completely dead (no dash/radio/lights/ignition/key remote lock) but after testing with a battery charged apparently the battery is completely full. I've tested while connecting to ...
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4answers
23k views

Electric start isn't functioning anymore

The electric start of my motorcycle isn't working anymore. I can hear a buzzing noise. I can still start it using kick start though. Can it be fixed? Please help!
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2answers
108 views

Motorbike alternators; idling, would a big one power my 4x4 camper's (minimalist) electrics?

I live 'on-the-road' (24 years, in Australia) of the last 11 years, in a 4x4 homemade (slow-build) camper, and like everyone (in normal homes) I need more power. I'm looking for a motorbike to sling ...
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2answers
14k 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 ...
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353 views

Kia Cerato 2009 won’t start - dash lights won’t work

Yesterday I disconnected the battery and reconnected it again (correctly) so I could change a head light as it was very hard to reach. Once the battery was reconnected my car wouldn’t start and my ...
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2answers
4k views

Why put copper in between battery contacts and clamps?

We have bought a used Toyota Yaris. Yesterday I allowed my kids to play in the car, and they discharged the battery... So I went to take it out to charge it up and I found pieces of a copper and ...
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1answer
1k views

97 Jeep Cherokee check gauges light came on and then my battery gauge dropped down to 9 didn't lose any power?

I'm so confused I had just left my house and got 3 blocks away and my check gauges light came on, then my battery gauge dropped down to 9v. My Jeep didn't lose power, and the radio, heat, lights and ...
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1answer
55 views

Modifying air conditioner to run without key inserted? (fan only, not temperature regulation)

In our Volkswagen Touran, I have already modified the fuse box in a way that the auxiliary 12V power outlets always deliver power, without ignition enabled, by connecting two piggyback fuse holders ...
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2answers
7k views

How much electricity / Power does it take to keep a car running?

Once a car has been started and is running, on average, how much electricity is needed for basic functions in the car to continue operating? I've been trying to find a reference on how much certain ...
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0answers
24 views

Electrical issue with 2009 Chevy Malibu

Was wondering if anybody is experiencing the same issues as I am with my 2009 Chevy Malibu. In the evening when it gets dark the door locks will start going haywire when the car is not running and ...
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3answers
22k views

Mercedes C250- Eco mode not working

i have a C250, W204, 2011 model, and i noticed that the ECO mode is not working anymore. When i turn the car on, the ECO button light is green and the ECO sign appears in the cluster. After 1-2 min, ...
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2answers
6k views

Motorcycle Starting Motor does not crank, WHY?

Eureka! After replacing the starter relay purchased on eBay with the original Honda one the engine starts and runs perfectly! ''''''2''''' UPDATE: installed a new fully charged battery = still no ...
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0answers
14 views

High Mounted 3rd Brake Light Not Functioning

I have a 2013 Jetta TDI with 34k. The third brake light doesn't work, I tried the flashers ... still doesn't work. I don't have a meter, so I can't tell if there's power to the wires. I did take the ...
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1answer
3k views

How To Diagnose 3rd Brake Light (Without Proper Equipment)

I have a 2012 Ford Focus (sedan version). The third brake light stopped working recently and I'm trying to determine if the problem is with the light itself or inside the vehicle, but a I have very ...
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1answer
38 views

What to check when my car has an electrical problem? [closed]

My car is showing an electrical problem (I suspect it is electrical). As an intermediate DIY what should be the first things I check, and how easy is it to check them? I'm thinking of Fuses, Relays, ...
2
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1answer
40 views

Wipers malfunction: they automatically start and don't stop at the correct place

I have a car that seems to have an electrical problem. Here is its weird behavior: When I turn the key (turning on the electrical component of the car) the front wipers start to wipe the windshield ...
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2answers
104 views

Can an alternator maintain a good system voltage (14 volts measured at battery terminals) but not be supplying enough current?

I'm reading a car electronics textbook that claims that an alternator can maintain correct system voltage (say, 14 volts) when under load, yet not be outputting enough amperage. I can't understand how ...
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0answers
53 views

What is this 5-pronged electrical outlet attached to the alternator used for?

I have the below hookup right next to the engine (CAT 3116) and I'm not sure what it is for. I tried googling this, but didn't find a hookup that was similar. The approximate circumference of the red ...
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3answers
2k views

1999 Yamaha 80hp Outboard Electrical Problem (Rectifier Overheating)

I recently purchased a pontoon boat and on day #3 my motor died, I'm hoping to get some help from the community with correctly diagnosing and fixing the problem. The motor - 1999 Yamaha 80hp four ...
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0answers
52 views

2004 Toyota tarago accelerator not working

I have a 2004 Toyota tarago & put a new battery in it but didn't realise it was around the wrong way & I connected the terminals back to front (negative to positive, positive to negative) for ...
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1answer
216 views

Why drill a hole in the base of a 12V battery?

I attempted to do some regular battery maintenance on a recently acquired vehicle. The cells were all low on fluid so I added some distilled water to each cell. However, one of the cells was obviously ...
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1answer
40 views

Transistor as a switch?

I want to use transistor or the like as a switch to close and open a ciruit whose voltage is 12 volt DC. Also, the transistor under same 12 v DC source must be operable at max 0.03 amps or 30 mAmps to ...
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2answers
80 views

I brought a car with a sticker on the copper strip on the rear mirror

does anyone know a way of removing the sticker from the rear without destroying the rear copper strip? ( it is the one that heats up when you turn it on) I am afraid of it stripping if i remove it the ...
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0answers
1k views

2012 Hyundai i20 starting problem (seems electrical)

I have been having a slight issue with my 2012 Hyundai i20 1.4 Automatic. Every now and then when I turn the key in the ignition, the key turns but without any of the usual lights coming on in the ...
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3answers
28k views

When should I disconnect the battery to stay safe during repairs?

I am planning to do some car fixes and want to know what precautions I must follow in order to make it safely. Specifically, I'd like to know is for what kind of work, the battery should be unplugged. ...
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5answers
37k views

My dashboard lights are dim

I drive a Chevrolet Cruze 2011 and about halfway home the dashboard lights dimmed. I don't have an adjustable knob. Is it as simple as replacing a fuse or battery? What could be the cause?
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1answer
39 views

motorcycle sputters and temporarily dies

Recently, my motorcycle (2008 Ducati Hypermotard 1100) has been temporarily dying while riding it, usually on the lower RPMs of the lower gears. I thought it was the heat, but today in the rain it ...
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0answers
298 views

Ford Transit - ABS Pump no power

I have a 2.2 FWD Ford Transit from 2009. My ABS/ESP and the red brake warning is on as well. When reading the error codes I normally don't get any ABS related codes. But when erasing the error codes,...
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1answer
156 views

Loud thumping sound coming from dash when turning key

I have a 2010 Ford escape and just noticed this morning that when I turn the key, there is a loud thumping noise coming from the dash. It only thumps about 4 times then is done. It doesn't do it when ...
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0answers
191 views

Electrical problem with a Toyota vitz 2009 automatic transmission

i have been having these issues with my car lately i will try to explain them as best as i can here are all the problems listed: the indicator lights work but disappears as soon as i put my feet on ...
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1answer
969 views

Missing fuses - is it OK?

I recently got the car horn replaced and the mechanic changed the 2xfuses for the horn from 7.5 amps to 15 amps each after installing the new horn. This is because when testing the horn, it blew a ...
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1answer
132 views

Instrument cluster swap between a 96 BMW Z3 and a 96 BMW E36 318i?

I recently got an instrument cluster replacement off eBay for a 1996 318i for a friend. The link has been provided below. But something I noticed is that the E36 318i has a MPG gauge while the cluster ...
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0answers
9 views

Intermittent starting

My 09 Hundai Elantra have an intermittent starting problem after a few cranks and a few minutes wait it eventually starts .appears to be worst when the engine is hot. On going problem for the past two ...
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1answer
367 views

Why are dashboard lights sometimes delayed

After turning on the headlights during driving it sometimes takes a while for the dashboard and tail lights to come on. I tested the tail light fuse which was good. Noticed that when the dash and ...
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1answer
63 views

Classic motorcycle buck converter 12vdc to 6vdc

I recently purchased a classic motorcycle, it's current factory electrics are designed to run at 6 volts. I do have plans to change it later to 12 volts but due to regulations in my country and to ...
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0answers
24 views

98 Toyota Camry won’t crank or start after ignition cylinder replacement

Let me start from the beginning my cousins 98 Toyota Camry had a ignition cylinder that wouldn’t turn without hitting it with a hammer. So we went to the salvage yard pulled an ignition cylinder and ...
2
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1answer
3k views

Why won't my 2002 VW Passat start?

I have a 2002 VW Passat 1.8T that just won't start after I stopped by a 711 for a snack. The key won't start the car anymore! A few odd things I noticed: There is not even a click when the key is ...
2
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2answers
4k views

2008 Audi A5 3.2 Sometime wont start but the electronicts work

Hi I have a 2008 Audi A5 3.2L V6 with about 80k miles. Every once in a while the car wont start. The dash lights work fine along with all the electronic parts of the vehicle. The vehicle doesn't crank ...
5
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3answers
7k views

Clicking sound when trying to start

We haven't driven this car much in the last month, so it's been sitting in our back yard. Yesterday we tried to start it up, but it is making a clicking sound while turning the key in the ignition, ...
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1answer
40 views

Electrical issue - Honda

A few things recently happened. About a week ago I drove through some flood water, probably high enough to out the exhaust system under water. There are also a few things I've noticed while at work ...
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1answer
109 views

Rewiring an engine

I have a 1987 Ford Ranger with an LL23 engine in the garage. I've been able to short the starter to the battery and get a compression test done. Mechanically the engine is good. The problem is, ...
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1answer
49 views

Load resistor heat issue from front turn signal lights serving as parking lights at night

Thinking of switching all 4 turn signal lights to LED from halogen and I will more than likely need some resistors due to notorious hyperflash or LEDs with built-in resistor as I prefer not to splice ...
1
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1answer
45 views

12V 10A outlets: Slight smell of burnt copper at 8A. Is the outlet still safe now?

When I accidentally depleted our car battery, I charged it's battery from the inside outlets, using a 0-30V 0-10A bench power supply device. The car has 3 outlets. One individual outlet is rated for ...
0
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2answers
73 views

2003 Mazda 3 AC Relay Won't Close

I have a 2003 Mazda 3 with a strange issue. The AC wasn't working, and I found that the relay wasn't closing when the button in the cabin was pressed. The actual relay is fine. I opened up the relay ...
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0answers
20 views

volkswagen passat 2002

I have a passat and the previous owner fitted a DEFA alarm system which is pretty useless. It appears to interfere with the central locking and wing mirror electric control. I have removed it and ...

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