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

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1answer
235 views

2011 Chevy Traverse alternator problems

I have a 2011 Chevy traverse. I Went to O'rielly's and had an alternator tested. They said voltage regulator failure. Had the alternator changed out. Still showing at a different O'rielly's ...
5
votes
2answers
588 views

Writing CAN Messages

I want to know what should I write with the CAN ID to send it to ECU. I am using ELM327 and Raspberry Pi with all connections to OBD-II. Initially for sending general PIDs to the ECU through ELM327 ...
5
votes
1answer
2k views

How to troubleshoot a fan that won't work unless it's on it's on the highest setting?

My car fan won't work unless it's on 4 (full power). I have 4 options of power for the fan 1 - 4 but nothing happens on options 1 - 3. I have taken the panel off and cleaned all the contacts for the ...
4
votes
3answers
748 views

Upgrade to HID lights in a Jeep Wrangler

I would like to upgrade to HID lights in my 2008 Jeep Wrangler. The stock lights aren't bright at all. My question is, since this would be an aftermarket upgrade, what am I looking at here? Is it ...
3
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0answers
15 views

F350 2002 wiring problems

F350 2002 wiring problems. Electric mirrors were fixed and then problems with power windows, air conditioner and radio arise. The windows, radio and air conditioner stop working after started and ...
4
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0answers
54 views

Highest Fan Speed on AC/Heater Blower no longer works.

I've found a couple of posts here about blower fans that only operate on high speed, but the issue I'm having is the opposite. All of the fan speeds work except for the highest speed (really the only ...
6
votes
3answers
5k views

AC blower won't turn on after replacing battery

I have a U.S. 2011 Volkswagen GTI. After the car wouldn't start (starter would crank but engine would not turn on) I decided it's probably time to replace the battery, and did. Car starts fine, but ...
5
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1answer
39 views
5
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1answer
717 views

Vauxhall Vectra C Blower Motor Sqealing / Clunking

I have just replaced my Blower Motor Resistor as my fan wouldn't work on any setting other than 4 (in line with a previous post: How to troubleshoot a fan that won't work unless it's on it'...
3
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3answers
576 views

Sudden electrical problems in 2001 Buick Century

My wife drives a 2001 Buick Century with ~130k miles. A few days ago, she was driving it home when she described that several warning indicators came on suddenly, the windshield wipers stopped ...
5
votes
1answer
33 views

1998 VW Beetle - Clutch and Electrical Issues

I have a 98 VW BEETLE. I had to change my clutch all the way from the master cylinder to the clutch pedal. Still have no clutch. Then when I tried to start my car all the lights come on even radio ...
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2answers
4k views

Sound system volume fades in/out erratically

I recently got a 2006 Mercedes e350, passed it's Mercedes certified check up a week ago so it's electrical should all be in working order. The last couple days I noticed the volume of the sound ...
8
votes
3answers
593 views

Why do attempts to charge a flat car battery with an electronic battery pack give results as if there's a short circuit?

I'm not having a good weekend - car wouldn't start, even when jump started using a conveniently placed 12v generator battery (almost identical to this question, I suspect dodgy cabling to the starter)....
8
votes
1answer
311 views

Battery Light Won't Go Off Since Changing Battery

I just changed the battery on my 98 Mazda 626 and now the battery light comes on and stays on after starting the car. I checked the battery and it's reading 12.8v with the engine off, and 13.8 with ...
4
votes
0answers
67 views

Major electrical melt down in wiring

I have a 2000 Pontiac Grand Am. I noticed my cigarette lighter quit working. I had a friend put a new fuse in my car for me, then I used my cigarette lighter. All of a sudden smoke was coming through ...
7
votes
1answer
74 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.
0
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0answers
21 views

2008 Honda Pilot XL, only part of one headlight comes on, ONLY one of the 2 lights

i bought a new headlight bulb and replaced it, but the problem still the same, only the lower light comes on, the upper bigger light wont turn ON.. high beams are fine btw Thank you
7
votes
1answer
84 views

Time Delay Relay and Flyback Diode

I want to control an auxiliary fan on my 1969 Mercedes which is currently wired to run until the temperature drops below the sensor level. Sometimes this takes quite a long time even after the car has ...
10
votes
2answers
106 views

2003 Suzuki Katana GSX600F - No Start Issue

So I recently purchased this motorcycle from a third party. 2 days ago it would start up fine and you could ride it. The guy I brought it from said the battery was acting cranky so you should change ...
3
votes
3answers
589 views

Pontiac Sunfire mysteriously won't start

So, here's the deal: -No lights, no noise, no clicking. -Battery voltage reads fine on multimeter. Terminals are very clean and not corroded. -But it won't jump start. -Headlights turn on. -Fuses are ...
10
votes
3answers
536 views

How to upgrade a motorcycle battery to a bigger AH battery?

My motorcycle (honda CBF150) came with a 12V 3AH battery. I want to change the stock 35w headlight to a higher power one and connect them directly to the battery (the stock ones are not, and they ...
3
votes
2answers
236 views

Can I decrease the sensitivity of my seat belt “person detector”?

Any time I put something - as light as 10 pounds in my passenger seat, my seat belt alarm goes off in my 2007 Pontiac Vibe. To avoid the VERY annoying beeping, I usually end up buckling up my backpack....
4
votes
1answer
123 views

Reversed the battery terminals - What damage have I done? [closed]

I inter-switched my battery wires, positive to negative. Now the car moves but does not accelerate, even with the pedal to the floor. What damage have I done by reversing the battery terminals? The ...
6
votes
2answers
80 views

Is there something that can be applied to electrical connections to prevent rust and corrosion?

Another recent question got me thinking about this. Will a ground to the frame work properly if the bolt is powder-coated? Since I don't have any skill, tools, or ability to powder coat, whats the ...
5
votes
0answers
64 views

low beam headlight won't work unless highs on

I have a 1961 Apache. It has the 4 headlight system. The dash lights wouldn't work right unless I wiggled the switch. I install all new headlights and bulbs in the dash. Then I installed a new ...
8
votes
2answers
412 views

Will a ground to the frame work properly if the bolt is powder-coated?

Would there be any electrical issues if a grounding point had a bolt welded and powder-coated or is it better to drill a hole, weld a nut to the frame and then powder-coated?
7
votes
4answers
319 views

Standard mounting screw for vehicle relay

I have a MAH-112-C-4 relay that is supposed to be capable of working as a relay for fog light, head light, battery control, oil pumb control, fan control, air conditioner, harness. There is a ...
4
votes
1answer
90 views

1996 Mustang GT won't start with shifter in Park, but will start in Neutral

I just had this weird problem today. The engine will turn fine, but won't start with shifter in Park. Once started in Neutral the motor runs fine with no hesitations. Battery is strong. Any ideas?
4
votes
1answer
60 views

Low beam head lights quit working

My low beam headlights quit working. I checked all of the fuses. They are good. What are my next steps?
7
votes
1answer
676 views

How to reach the fuse box from Mk1 Golf Cabriolet?

On an 91 Golf Cabriolet (Mk1), the fuse box is hidden behind the knee bar, and has no access hatch. I need to have a look at the top of the fuse box to see if fuse 19 (indicators) is broken. Is there ...
16
votes
5answers
68k views

What causes battery terminal corrosion?

I put a new battery in my car about 8 months ago. After a problem starting a couple days ago, I found that there was massive corrosion under the battery terminals, so I cleaned them out and ...
3
votes
0answers
57 views

Stubborn rear fog light (BMW E46)

The rear fog light in my BMW E46 2001 is broken. Obviously, I first tried replacing the bulb itself, but the old bulb was still fine. I tried with a new bulb anyway, but the light didn't work. I ...
3
votes
1answer
46 views

Troubleshooting Trailer Lights

I have checked the connection on the truck and all are working fine but when the trailer is hooked up I have turn signals and running lights but no brake lights and with the running lights on I press ...
3
votes
0answers
22 views

Problem switching in new dome lights in the front

I'm trying to install these multi-color dome lights, I successfully installed the right side, but when I tried to install on the left side, the left one won't work. The product is not the issue, I ...
4
votes
1answer
51 views

Key-on electrical for the Honda NC700x

I've got a 2014 Honda NC700x motorbike, and I'd like to install the aftermarket Bikemaster Heated Grips on it. I purchased the 7/8" kit, instead of the 1" kit that is also offered. When it comes to ...
6
votes
3answers
836 views

Will an auxiliary battery hurt a vehicle's alternator?

I am going to be road tripping and living out of my SUV for a while. I need a way to power a tiny portable cooler/fridge 24/7 and would like to be able to power my cell phone, laptop, and maybe a few ...
1
vote
2answers
155 views

MG Rover Immobiliser removal

I have a 2003 MG Rover Streetwise, I need to remove or at least completely bypass the OEM Immobiliser. Driver door lock is broken due to attempted theft, so no point trying to enter the code, the key ...
10
votes
1answer
156 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 mileage was 130,000 KMs. After rebore first service of 3000 km is successfully completed and now I'm facing a ...
5
votes
1answer
35 views

2002 Hyundai Elantra

I made a down payment to purchase a 2002 Hyundai Elantra and while viewing the car when the battery was disconnected with the car running the car died. Does that mean it's the alternator? Because if I'...
3
votes
1answer
56 views

Change electrical switch of the ignition switch on a Deawoo Cielo (1995)

The car is still starting flawlessly but some accessories like the radio or the clock don't always work. I noticed that pushing the key deeper in the ignition would make the radio start, but ...
6
votes
1answer
46 views

How Common are Voltage Drop Problems?

After watching this video on voltage drop, it makes me feel like testing the resistance of various sensors and accessories with my multi-meter isn't really a reliable test of anything, since I can see ...
2
votes
2answers
410 views

What are the methods to improve headlights of a car?

I'd like to improve the headlight illumination on my Toyota Carina AT 150. It is equipped with square type 55W lamps, but it's difficult to drive in the city or rainy/misty conditions. What are my ...
1
vote
1answer
254 views

2006 Saturn Ion won't shift into drive but will in reverse

Couple of days ago my 2006 Saturn Ion transmission stopped working. I can put the car into drive but when I hit the gas it just revs up and doesn't actually go anywhere - it will roll though like it's ...
5
votes
1answer
130 views

Security and engine issues

I have a fiat stilo 1.4(2004) plate. It had an intermittent issue with the "car security manager loose connection" and the car wouldn't start sometimes, But when shaking the fuse box/power ...
4
votes
1answer
54 views

How does the ignition system control the Energy of the spark?

An automotive ignition system needs to provide a specific amount of energy to properly ignite the air/fuel mixture in the combustion chamber. Energy = voltage * amperage * duration. A specific ...
4
votes
1answer
52 views

External regulator just installed and now there is a battery drain that kills my car

My 1996 Jeep Grand Cherokee started beeping and telling me to check the battery. So I had the car tested and it said the voltage regulator was bad. The voltage regulator on these Jeeps are in the PCM,...
4
votes
2answers
20k views

diagnose faulty voltage regulator causing battery overcharging?

I've been having an issue with an '03 Toyota Echo. The alternator died (at least that is what I thought) as the battery kept going flat. I found an alternator at a wrecker and fitted it, and I ...
3
votes
1answer
131 views

Motorbike has no power, but kick start works

First up the motorcycle in question is a Skyteam V-Retro 250 (V-Raptor in some countries). On the way home last night I noticed that my tail lights weren't working so I bought a new bulb like I had ...
4
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0answers
22 views

Central locking for LR Defender Td5 year 1999

Is it possible to change the manual locking system into central locking system for all three doors for this model of 1999? Also, can the manual window opening closing system be changed into an ...
3
votes
1answer
37 views

Sporadic speedometer, and performance lags when speedometer not engaged

I have a 2000 Honda Accord, 2.3L L4 with a 5-speed manual transmission. Recently, the speedometer has been sporadic- sometimes accurate, sometimes bouncing around, but mostly sitting at 0. I replaced ...