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

4
votes
4answers
1k views

High Beam Indicator Problem

I have a situation where I'm doing wiring for the dashboard of a vehicle. For whatever reason, the turn signal/headlight switch on this vehicle outputs a 6 volt signal on the high beam wire when the ...
3
votes
2answers
73 views

Will low gauge wire to a fuse be a bottleneck?

I am running 4awg wire to my car's 400watt amplifier. The wire is running about 10 feet from the circuit breaker that it is connected to. The circuit breaker (as of now) is connected to the car's ...
3
votes
0answers
422 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 ...
2
votes
1answer
193 views

Battery has a draw with key off

I have a 2000 Grand Cherokee, and I’m having 2.23 Amp draw off the battery when the key is off. Leave the door open 2‒10 min., and the battery is dead or not strong enough to start the vehicle. I go ...
2
votes
1answer
276 views

Front grill electrical component near radiator

I have a 2008 Mazda 3, and unfortunately I ran over some road debris (probably a tire or something, I didn't get a good look at it). My local Mazda dealer checked it out and said there was nothing ...
0
votes
1answer
55 views

Aux port '12 Pathfinder not going in all the way

So I have a Pathfinder and the stock has an auxiliary port when I got it (used), but the 3.5 cords that I insert into them doesn't go in all the way, and I'm giving it quite a bit of pressure. I'm not ...
1
vote
1answer
352 views

'99 Audi A4 seat belt warning sign

I've had this seat belt warning light on my dash for a few weeks now. My dealer says the wiring to my driver seat is gone and replacing it could cost close to 800 USD. Is there a better option?
1
vote
1answer
293 views

Ford Focus 2006 - Trunk latch won't close

I lost my keys, so I had a locksmith come and make another Key. He took the lock latch off to do something with a computer as well as the door and ignition. Now the trunk latch will not latch and ...
0
votes
0answers
20 views

Car Radiator Fan may have a Fault, I'm an electrical noob [duplicate]

I took the fan out from my engine compartment and am now ready to test it. It consists of two fans, one larger than the other connected I believe in series with two large wires, one red, one brown ...
0
votes
1answer
2k 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 ...
7
votes
1answer
124 views

Shutting off fans at highway speeds

On my vehicle (92 Civic) and most others I've seen, the condenser fan comes on whenever the A/C clutch is engaged. This seems like a waste of electricity (and thus fuel) when cruising at 60-75 mph, ...
3
votes
3answers
5k views

What is the Magic ON temperature for Electric Fans?

I want to wire up my old truck to turn an electric fan ON to keep the radiator cool. The ECM has an engine coolant temperature sensor mounted in the engine that alters the resistance to determine ...
4
votes
1answer
554 views

Misfiring Engine Hyundai Accent Executive

My Hyundai Accent Executive is 2001 model. Recently the engine started misfiring badly during idling with Air conditioner on. It is almost like the engine is going to turn off any moment. The ...
2
votes
2answers
404 views

Safe resistance between alternator and battery?

I am trying to figure out which awg of wire I need to get for my new, 160 amp, alternator. I found this chart which shows the resistivity/length of different wire gauges. Chances are that I will not ...
4
votes
1answer
402 views

Honda Prelude: digital fuel and temp gauges dimming and brightening repeatedly

I have noticed an annoying issue on my '94 (4th gen) Honda prelude. The digital petrol and temperature gauges appear very faint when starting the car. After about 5 mins they brighten again, only to ...
4
votes
1answer
886 views

A/C electrical problem on 92 Civic

I've had intermittent A/C failure on my 92 Civic DX going on for a couple years now. It's clearly an electrical problem. Normally it's solvable by putting some pressure on the control panel, but ...
3
votes
2answers
139 views

If I were to convert a gas powered automobile to an electric car, would a difference in specs possibly damage the car?

I would like to convert a Mazda Miata into an electric car, I plan to remove the engine and the gearbox, and have the car be a direct drive. The motor I intend to use has twice the torque of a ...
2
votes
2answers
3k views

Car stereo lights dim/flicker

thank you for taking the time to read this. Last year I installed a car stereo head unit in my car. I did the installation myself rather than having it done professionally. I am no expert in that ...
5
votes
3answers
517 views

93 Nissan Sentra SE-R, replaced alternator voltage still low

My car died while I was driving it, but I can put the battery on a charger (or from another car, with jumper cables) and get it running albeit for a short period of time. I put a multimeter on the ...
3
votes
1answer
67 views

Number plate lights not working

Hi I have a one year old Motorhome, the number plate lights have corroded beyond repair. I am waiting for the to be repaired under warranty. Does this mean technically my Motorhome off the road as I ...
1
vote
1answer
1k views

My car stereo does not save radio station presets

I have a 2005 Honda Accord with original radio. The problem is that it doesn’t save any radio station presets. Well, sometimes it does, it seems like when the engine is hot and I program the stations ...
4
votes
1answer
551 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 ...
4
votes
1answer
1k 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
1answer
1k views

Tail light is intermittently out on Dodge Caravan

I have a 2004 Dodge Grand Caravan. A couple of days ago, the right turn signal started flashing rapidly when turned on to indicate a burned out bulb. I checked and found the right tail light was ...
4
votes
1answer
109 views

01 Monte Carlo electrical gremlins

My wife has an 2001 Chevrolet Monte Carlo that sat for about 6 years before she got it 3 years ago. It’s having a few electrical problems. Temperature gauge doesn’t work. I replaced the sender with ...
3
votes
1answer
370 views

Turn Signal Randomly Changes Directions

I have a 2005 Dodge Dakota. The left turn signal has started randomly switching over to blinking the right signal light. When it happens, the sequence is usually: Turn on the left signal, it blinks ...
3
votes
1answer
182 views

Brake lights on '94 Honda Prelude stuck on

All 3 brake lights on my Prelude seem to be permanently stuck on. This occurs all of the time - the lights stay on even if there is no key in the ignition. I've had to disconnect the battery. Would ...
3
votes
1answer
574 views

2000 Grand AM GT engine and electric cut out randomly while driving

My Grand Am is cutting off randomly while driving. I have not been able to purposely reproduce the problem, which makes diagnosis difficult. I am looking for any advice in diagnostics, or parts to ...
4
votes
2answers
24k views

'01 Jeep Cherokee - Check Gauges light & low battery gauge

Bought my '01 Cherokee back in March & have had nothing but problems since; I've been slowly fixing them when I have the time/cash. However, this particular issue has me stumped (and it's happened ...
4
votes
2answers
5k views

Can cold weather cause TPMS sensors to malfunction?

I just bought a new 2011 Honda Fit and while driving it home from the dealer, I noticed that a little light on the dashboard was on that said "TPMS". When I got home, I consulted the owner's manual ...
7
votes
3answers
2k views

Does idle RPM increase when there is heavy load on the electrical system?

I am thinking about installing a 500w halogen (HDX brand) on the roll bar in my jeep as the dome light because often I work in the back when it is dark or when I would like more light. The 500w light ...
4
votes
1answer
812 views

Windshield wipers worked intermittently then quit altogether

The wipers on my 2000 Mazda Protege recently quit working. It wasn't an all-of-a-sudden thing, though. Every so often over the last few weeks they would stop for a few seconds, then start again. ...
2
votes
1answer
499 views

1996 Chevy Tahoe Won't Start

My Tahoe won't turn over. There are no clicking sounds. Lights will turn on. Nothing happens when I turn the key.
6
votes
2answers
483 views

How to detect a failing car alternator..?

Is there some way we can predict that the car alternator is about to fail in order to avoid a discharged battery situation on the road.. Although it will slow the sound of horn and will dim the ...
4
votes
2answers
204 views

Audi A6 : brighter reversing lights?

On my 2007 A6 the reversing lights are very feeble, enough to make it quite difficult to reverse in my own driveway in the dark. I understand that I can't simply use higher-wattage bulbs or LED ...
5
votes
3answers
2k views

How to amplify car speakers without stereo?

I have a 1980 VW Dasher with its original speakers but no radio. It has an unusual (erroneous?) electrical configuration where most accessories (e.g. lights, cabin fan, etc) still run even with the ...
5
votes
3answers
936 views

How do I diagnose opened door indicator problem on a Honda Civic 1.8Vti Aerodeck

The opened door light indicator flashes at random rate when I drive. This also randomly triggers the alarm system that I had to disconnect. I have removed every door switches. No differences. ...
2
votes
1answer
277 views

98 Grand Cherokee drains battery

The battery would go dead after sitting for a day. I checked battery and found a bad cell with a hydrometer. Replaced the battery and the problem remained. I hooked my meter between the positive post ...
3
votes
1answer
4k views

Headlights turning off randomly

I have a 95 Chevy S10. When I drive my truck around at night I notice that occasionally my headlights turn off for about 3 seconds and then come back on by themselves. There doesn't seem to be any ...
2
votes
1answer
628 views

Jetta turns off immediately after starting

So I parked my Jetta ('06 2.5) 2 nights ago, when I went to start it yesterday morning, the starter seems to work fine- turns over, then instead of idling down, it turns off. Must have tried it 5 ...
5
votes
3answers
575 views

2007 BMW Z4 won't start when my phone is plugged into the cigarette lighter plug

Sometimes when my cell phone is on charge in my 2007 BMW Z4 before I start it, nothing happens when I turn the key. The car is acting like it would if I did not have the clutch pushed in - the key ...
7
votes
2answers
595 views

My mazda milenia wont rev past 2500 rpm

So I just recently bought a 2000 Mazda Milenia s Millennium edition,and on my first day out with it, I experienced a very unusual problem. After about 20 minutes of driving the car wouldn't rev past ...
4
votes
1answer
89 views

My drivers side window no longer closes with one press of the button 1

I share a similar plight with the guy before only difference is it's with an 04 Forester STi. I held the passenger front window switch up for a little too long next thing I know my driver side window ...
2
votes
0answers
846 views

Mercedes Atego OBD2 live data codes

I have tried to connect an OBD2 ELM327 adapter in Mercedes Atego. Somehow I managed to get it in that OBD2 connector. I can see that my adapter is receiving electricity. These are the PID's that I ...
0
votes
1answer
514 views

'97 dodge grand caravan won't start - sometimes

intermitent won't start problem. Might start when I turn key a couple extra times or a 1000 times, til my fingers are sore. Sometimes I have to leave it and come back later, but sometimes I'm a ways ...
6
votes
4answers
2k views

Why does my car scream on cold start?

My 1988 Subaru XT6 2.7L engine screams at me on a cold start then it will stop and then do it again when I take it out of park, but then it stops. Also, my car is losing antifreeze. Any ideas why?
1
vote
1answer
741 views

97 Ford Explorer battery going dead

On Friday, my girlfriend's '97 Ford Explorer v6 lost electrical while driving. We were able to get it going again with a jump start. Lost electricity (lights / gauges) while driving, but were able to ...
1
vote
3answers
940 views

Why doesn't homelink plus programming work as described in the manual?

I'm trying to program my 2007 Prius to open my garage door. I succeeded doing this for my 2006 Highlander with no problems. However, for the prius, I cannot get the car to work as described in the ...
5
votes
1answer
3k views

What current is “normal” for constant battery drain (not parasitic)

I'm having some problems with battery going dead sometimes, and I noticed that there are some small sparks after disconnecting the battery for a few seconds and then reconnecting again. It is not big ...
2
votes
1answer
3k views

How to track down an intermittent battery drain?

I know there are several questions on here about finding the source of a battery drain (like Battery drains by itself when vehicle is parked (parasitic draw) ). However I don't think the answers ...