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
47 views

What would go into a tranny swap on a modern vehicle

I have a 1999 Isuzu trooper and I have been toying with the idea of doing an engine and transmission swap on it. If all goes well with the engine I plan on getting I would like to replace the ...
3
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1answer
54 views

1997 Honda Accord F22B2 - Electrical Issue After Cylinder Head Repair

I recently replaced the head gasket and timing belt on my F22B2 (non-VTEC, 4 cylinder) 97 Honda Accord. I got everything put back together, but now the ignition switch doesn't have the same results ...
3
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1answer
125 views

Brake light connector drops to 0v when bulb is in, 12v without bulb

I'm stuck with a basic electric problem, on my honda cb500. The rear light bulb is a twin-filament for position/brake, 12v 5/21w. It's brand new and tested. The battery has 11.9v. On the rear light ...
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1answer
40 views

Golf mk4 climate control show speed instead of outside temperature

I know you can change climate control to show current speed when you enter diagnose mode but it gets reset after ignition restart and also you cant adjust your temperature or something like that while ...
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1answer
177 views

Diagnosing Vehicle Brake Lamp Fuse Blowing; What to test next?

Fuse keeps blowing when I press the brake pedal on a 98 Windstar. Brake switch is good. Inserted new fuse and the brake lamps do not light up before the fuse blows. Removed all bulbs front and back ...
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1answer
303 views

Portable generator starter problem

The generator is King Canada Model no. KCG-6500GE, the battery is 12v and is in good condition. When I turn on the key to start it nothing happens, I do have power to the starter connection. What ...
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1answer
2k views

Central Locking Help: Why are there 3 wires for each door lock?

Tl;Dr: I want my hazards to flash with the central locking. I need to wire them up together with a diode to each side (left and right). The central locking has 3 wires My questions are: Does anyone ...
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3answers
180 views

My 2002 vw golf keeps dying?

Hi Just wondering if anyone can help on this subject before I give up and sell it for spares! My VW golf (2002) had battery problems where I was going out to start the car and it would attempt to ...
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1answer
257 views

Engine Turns but won't start

It's an old Renault 4-cylinder carburetor engine in a boat. I don't know much about engines so let me know if I'm not including important information. The boat is old but new to me. I drove it for ...
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1answer
220 views

Are 'voltage stabilizers' a scam?

I have a 2002 Saturn SC2. I was told that adding a voltage stabilizer could improve its performance. Is this true? The units appear to simply be some capacitors hooked up between the battery ...
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2answers
783 views

Headlights won't turn on & taillights won't turn off

I have a 1998 Nissan Altima. My headlights won't turn on, but my parking lights and tail lights won't turn off unless I unhook my battery. Any ideas what the problem might be? Or a solution?
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1answer
43 views

Clio I indicator control non-functional

Model: 1997 Renault Clio RL Panache The hazard lights are functional and I've changed the fuse (to the on-board spare) for the indicators, but still the control stick for the indicators has no ...
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2answers
390 views

Mk5 Golf TDI with battery drain and brake lights coming on on their own

I have a 05 Mk5 Golf TDI. I have to jump it in the mornings as its battery is dead, but it will last all day if I'm driving it. It will start straight up if I stop for a hour or more, but if left over ...
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1answer
834 views

Car won't start/respond to remote or anything until headlights are turned on

I have a 1998 Infiniti I30 in really good condition except for this issue I've been experiencing lately with increasing frequency. What happens is, and there's no surefire way to reproduce the issue, ...
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3answers
3k views

1997 Honda Civic won't start; stuck in park

Last Sunday I was driving home and noticed my dash had no lights and my power windows would not roll up. As I pulled into the driveway to park I tried to put the car in reverse. As I did so the ...
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1answer
874 views

Wiper motor voltage troubleshooting

I am troubleshooting a rear wiper motor problem in a 2003 Ford Focus wagon (LE). When I measure the voltage to the contacts (with the wiper switch on), i get intermittent (~4 s) voltage at 200 mV. ...
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1answer
835 views

Wiring up boat electronics - 240V and 12V with inverter

I've just bought a boat, but the electrical systems need a bit of an upgrade before going cruising for any length of time. At the moment, All the 12V runs from a single starter battery, and there are ...
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7answers
43k views

Unable to start the vehicle depending on how long it has previously been driven

I have a Citroen C3 which is giving me a headache. The problem is a recent one, and is basically that I can't start the car. The strange thing is that the problem only surfaces when I've been driving ...
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3answers
9k 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 ...
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1answer
68 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 ...
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1answer
210 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 ...
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1answer
9k views

Will a BCM prevent a car from starting?

I've been dealing with an issue for over a year wherein my 2005 Pontiac Grand Prix starts sometimes and does not start at other times. I had the issue diagnosed last year by the GM dealership. They ...
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1answer
85 views

2007 S40 - Accessory Delay (5 secs) when turning the Key to Position II

My son's 2007 S40 has an accessory delay of 5 (secs). The lights and indicators ultimately come on. The car has no problem starting and runs nice. The dealer says it needs a new ignition. An ...
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1answer
2k views

Replacing Vauxhall Corsa C (2002) rear fog light

I need to replace the right rear fog light in a 2002 Vauxhall Corsa C; not just the bulb but the whole unit. I'm looking for instructions on how to replace the lamp preferably without removing the ...
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2answers
298 views

What functions & features should I look for when buying a multimeter?

Going to be used for car maintenance/restoration work and around the house repairs.
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3answers
783 views

2003 Nissan 350 Z won't accelerate

We own a Nissan 350 Z and this morning it would not start. It would turn over but it wouldn't fire. After pulsing the gas a little bit it would start but then letting off the gas would cause it to ...
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1answer
476 views

2007 Nissan Maxima Windows and Sunroof are Unresponsive

All the windows will not go up or down including the sunroof. Everything else is working. The fuse under the hood looks ok. There no sign of it being bad. Can it still be the fuse and if not what else ...
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1answer
74 views

How do I test fuses with a circuit tester?

Lights all flicker. When I an in the cabin the head lights flicker. I want to test my fuses with a circuit tester. Should the engine be running or will I be blown away? Please help, I'm a newbie ...
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1answer
75 views

Electronic disaster after replacing water pump and alternator on a 2008 Scion?

I have a 2008 Scion. I changed the water pump and alternator. After I put it back together I have no power steering, power door locks or windows, Tail or brake lights. Half the warning lights on the ...
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1answer
50 views

Utility trailer lights issue

My small utility trailer has sit here for more than a year. Now I found its lights don't work anymore. I used my multimeter to test the four wire harness and find the following: Connect any other ...
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3answers
525 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 ...
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1answer
61 views

High idle, not shifting gears - 1995 Mercury Mystique

My friend has a 1995 Mercury Mystique that was suffering from low idle problems (stalling out at stoplights, etc). He replaced the throttle position sensor, and after that the low idle problem was ...
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1answer
64 views

Fluctuating amp meter on 1948 automobile

On an old auto 6 volt (generator/regulator) system, what causes the ammeter to fluctuate between zero and -35 amps? Seems acceptable at idle but fluctuates on the discharge side when driving. Will ...
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1answer
128 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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2answers
170 views

05 Mustang electrical problems

I have a 05 Mustang base V6 auto. Headlights won't stay on. Sometimes high beam works. Everyday it's different. Last night when the fans turned on the lights would come on the off again when the fans ...
3
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1answer
118 views

Loss of power to the sound system. Can it be the ground?

I have a 2008 volkswagon rabbit. The sound system has stopped working completely. I've checked the fuses and none of them are blown. It is a stock 2008 vw rabbit 4 door which came with the ...
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1answer
396 views

2001 Mazda Protege — Battery Charge Problems

For the past year or so, I've had to manually charge the Protege's battery before going anywhere, every single day. Either the battery is not "holding its charge" or there's a component that's ...
3
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1answer
2k views

Jetta intermittent starting problem

I have a 2007 Jetta with 75k miles on it. What I'm running into is that out-of-the blue, the car will not start. Generally, it turns over, but never starts. One time, it started but shut itself off ...
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2answers
75 views

Keyless control system does not respond

I have a 2000 Ford Excursion. Suddenly the remote system does not respond. I checked the battery of the keyless and replaced it, but it didn’t make any difference. Are there any thoughts, or steps ...
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2answers
3k views

2001 Monte Carlo ss. 3.8 liter cooling fans

2001 Monte Carlo ss with a 3.8 liter motor in great condition. The problem is... check engine light on, Temperature gauge not working and cooling fans stay on for 5 minutes after turning car off. ...
3
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1answer
184 views

1999 GMC Sonoma 2.2L, 5spd, SLS - no reverse lights, suspect transmission

No reverse lights. Complete diagnostics reveal; good Fuses, good blubs, good continuity, good reverse light switch. The switch was checked two ways: 1. jumped out with a piece of wire between ...
3
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1answer
2k views

My 2009 Vauxhall Corsa D Won't Start

I measured the voltage of the battery without the key in the ignition and it's 12.6. When I insert my key and turn on the ignition the electrics work fine, the headlights come on etc. When I turn ...
3
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1answer
2k views

2008 Pontiac Grand Prix Fails to Start and Electronics Go Awry

My mother-in-law drove over this morning to pick up my wife, and when they tried to leave the car wouldn't start. Not only that; the horn honked, the wipers started, the trunk popped open, and the ...
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1answer
248 views

2000 Dodge Intrepid electrical problem

I accidently let the battery power cable touch the frame of the car and it sparked. Now my car does not light up dashboard or anything type of power. I tried jumping the car and still no sin of life. ...
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0answers
13 views

Semi-permanent power inverter

I'd like to install a semi-permanent 500 watt inverter connected to the car battery for greater power delivery. The battery is in the passenger area, so there's no need to run wiring through the ...
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0answers
44 views

starting a diesel tractor

I have a diesel tractor with a generator.after sitting for a long period the battery was low so I used a portable jumper battery but mistakenly hooked up the cables in reverse. this caused smoke to ...
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2answers
27 views

Replacing a boats blown CDI fuse

Just rebuilt most of a 2 stroke jet boat. ( if you need / want any boat details, see: this thread ) Yesterday she fired right up no problem, today she won't even turn over. After some basic ...
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0answers
14 views

2000 Mercury Sable instrument cluster and headlights do not turn off

My 2000 Mercury Sable Premium LS (3.0L 24V Duratec V6) has an electrical issue: When I remove the key from the ignition, the instrument cluster and headlights do not run off. I can reach in at any ...
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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 ...
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0answers
49 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 ...