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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How to add Fog Lamps to Maruthi Suzuki Alto 800

I have a Suzuki Alto 800 lxi 2015 model and I would like to add Fog lamps for that, which is does not come with this model. But the Alto K10 has it. So I would like to modify it. Can I do that ? and ...
3
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2answers
767 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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0answers
67 views

Changing Ford e4od to 4r100

e4od is a gear driven speed sensor/ 4r100 is reading directly off tail shaft and signal is much faster causing speed to read much faster. Is there a way to put an in-line adjustable type signal ...
3
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3answers
179 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 ...
3
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1answer
253 views

VW Golf 2001 Mk4 Diesel ASR Engine Problem

I've spent a crazy amount of money on my car lately and I still have the same problem. I've replaced the: Catalyst Converter Radiator Starter Motor EGR Valve Track Rod ends & Wheel Bearings ...
3
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1answer
126 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
400 views

Audi A6 2.4L 99 - randomly sets off brake warning lights, no abs, no rpm, no A/C

Randomly while driving or standing still I get a bunch of warning lights that come on, beep and blink. Sometimes it lasts a few minutes, sometimes it will stay on for a few days of driving and turning ...
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4answers
3k views

How do you test relays?

I have a Pontiac Grand Am. After getting a hose replaced, I noticed that my fans don't come on now. I checked the fuses and cooling fan #2's fuse is burnt out, which (I think) should be for AC only. ...
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1answer
3k views

2007 Jeep Commander left turn signal will not turn off

I made a left turn today and now my left turn signal will not turn off (i.e., the interior arrow is flashing and the exterior front/rear blinkers are flashing). Here is the current state of things: ...
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0answers
28 views

1998 Ford E150 Van - Implementing Power Doors and Windows

I put different doors on my ford van that have power windows and locks. My van was not equipped with these features originally. How do I get power to the doors in order to make the windows and ...
5
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1answer
208 views

Knock sensor ground and dieletric grease

The knock sensor for my 2001 Subaru Outback grounds through the engine block. I've seen various advice about whether to put dielectric grease on the underside (where the grounding takes place). Some ...
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5answers
26k views

Keeping radio/stereo unit powered to save pre-set preferences?

In my previous cars I could save certain radio stations, volume levels, etc. on my stereo and they would stay saved (unless the battery went dead). I'm using the same stereo head unit in my latest ...
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2answers
1k views

Bmw E46: strange problems with automatically closing windows and broken light warning

I have had a couple of strange problems and I can't really make sense of it. When I parked the car, I locked the doors as always with the windows closed (I am absolutely sure about this; it was ...
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1answer
155 views

Which convenience features in a car affects fuel economy?

I understand that the A/C compressor runs with the engine belt, so it will always uses some HP when engaged, therefore it will have some effect on fuel consumption. What I want to know if there are ...
3
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1answer
46 views

2005 Suzuki Katana stalls when put in gear

I have reworked all the carborators on the motorcycle. All seemed well but once it was put in gear, it stalled. What do I need to look for?
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2answers
25 views

Bikes power is iffy [closed]

Hi I have a 03 katana and for some reason the bike won't power on anymore...I turn the key and nothing no lights nothing. I'm not sure if it's the battery or what. What should I do to trouble shoot ...
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1answer
1k views

Should I disconnect the battery when working on my instrument cluster

I am going to be changing a few bulbs on my Opel Astra's instrument cluster. Part of the process involves disconnecting the entire cluster from the wiring harness and obviously replacing it when done. ...
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0answers
61 views

Chevy 4.8 misfiring

I drove the truck through a big puddle and it killed it. Found I had completely soaked the air cleaner and had possibly got water in the intake. I replaced the filter and took contact cleaner to all ...
4
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1answer
161 views

Saturn Headlight Problem

I have a 2001 Saturn SL2 that is having a problem with one of its headlights. When I turn on the headlights, frequently one is not lighting. If I go to the front and give the lens a quick knock, it ...
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1answer
22 views

Rear blinker failure on camper trailer

My right rear blinker on camper trailer does not work but every thing else does. I have a test light to test fuses and relays on truck to see if that may be an issue. It has camper tow package. Where ...
3
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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 ...
3
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1answer
247 views

Does a brake controller need direct battery connection, or would a switched source work?

I'm installing a break controller & 7-pin receptacle for towing. The wiring diagram I am following (below) shows the 7-pin and brake controller wired directly to the battery. I want to know if I ...
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1answer
128 views

2009 Chevy Equinox Turn Signal

My 2009 Equinox turn signal lever is acting up. When you switch it to turn left you have to hold it down in order for it to work. It returns to neutral but won't stay on without holding it. The right ...
3
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3answers
125 views

Which car parts require more energy than the starter?

Today, my car didn't start. I think that the crank was turning over because I could hear the loud sound a car makes just before starting up but the car was not starting. Anyways, I called a mechanic. ...
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 ...
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1answer
20 views

Focus ST170 2002 Electric Mirror only works horizontal

I am in the UK and drive a 2002 (52 reg) Focus ST170. Recently the electric mirrors would only work vertically intermittently (always worked horizontally), and as of now will not move vertically at ...
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0answers
18 views

Yamaha fz700 brake and headlights problem [duplicate]

Recently bought a Yamaha fz700 bike. Headlights don't work whatsoever, checked fuses, bulbs, and I found that wires aren't getting any power. Flipping the Hi/Lo beam switch doesn't change anything ...
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2answers
146 views

1987 Yamaha FZ700 headlights not working

I recently bought a 1987 Yamaha fz700, and the owner said the headlights didn't work, and I can't figure out what's wrong. We checked some of the wiring out, and the bulb connectors have no power ...
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1answer
24 views

No power situation - 1990 Mercury Couger

The engine won't turn over and there is no radio or power windows. What is the connection with these three things all at once? I replaced the coil and starter. Checked fuses, relays, etc. It ...
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1answer
3k views

Toyota Tacoma 2007 fuse diagram

I am having bad luck searching online to find a concise fuse diagram for my Tacoma. I am a little frustrated with the abbreviations that are on the diagram on the box cover. In particular, I need to ...
3
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0answers
51 views

Access OnStar Wires on 2012 Equinox

I've got a 2012 Equinox that I want to attach an inviscord to the Onstar wires, but I am not sure how to access the wires. There is a wide black plastic cover where the rear view mirror attaches to ...
5
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3answers
12k views

OBD-II reader/scan tool that can also diagnose air bag light

Is there an OBD-II reader/scan tool that can also diagnose air bag warning light? My 2004 Honda Element EX has a red air bag warning light that recently has turned on. The nearest Honda dealer wants ...
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1answer
138 views

Charging an SLA battery for storage in an automobile

Whats the best way to maintain a 12v SLA battery in an automobile? Would a direct 12v connection to the vehicles battery system be sufficient, or is there a circuit that should be placed in between ...
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2answers
93 views

Battery/alternator on 99 Chevy Prizm?

My car was running fine (no lights/warnings). The next day I tried to start it and it was completely dead not even a click sound like normal battery is going bad kind of thing. After I got it jumped ...
5
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1answer
10k views

How should the lights for a trailer be hooked up?

I have a tent trailer and the lights don't work right. It has a 4 wire connector to my car but one of the wires on the trailer connector was worn out and probably not working. So I got a new 4 prong ...
5
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1answer
4k views

How can I diagnose gradual electric power loss in a VW Golf Mk5?

I'm experiencing loss of electrical power to my Mk5 Golf. It seems to happen mostly when the car hasn't been run for two or three days. We changed the battery a few months ago. More recently, there ...
2
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1answer
207 views

Negative-grounded vehicles: some switches on positive, some on negative, why?

As far as I can tell, on my van which is negative-grounded, all fuses are somewhere between the positive terminal and the load being protected by the fuse. However, some switches are on the positive, ...
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1answer
814 views

2007 Rabbit - Intermittently wont start

Vehicle: 2007 VW Rabbit. Auto. 2.5L Problem: The problem started one week ago. When starting car sometimes it will only turn over once and then silence. Solution is to wait a minute or so and then ...
3
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1answer
213 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 ...
2
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1answer
96 views

Astra G 2.2 - Electrical Issue

I have an Astra G 2.2. It was working just fine, no issues. Recently passed MOT with no advisories or issues. Today I topped up the oil and replaced the overhead interior bulbs with LEDs. They ...
1
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1answer
156 views

dodge intrepid 2000 electrical problems

I have a Dodge Intrepid 2000 My car was recently wrecked.The front is bent in. After the wreck everything electrical was still working the only thing wrong with it was the alignment belt. I had ...
5
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4answers
2k views

Can an O2 sensor cause faulty spark plugs on driver side only when the spark plugs were just changed?

I took my truck (2006 chevy silverado 5.3l v8) to chevrolet dealership due to the fact that it kept sputtering then dying. The check engine light was on the whole 9 yards. The fuel pump has been ...
2
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2answers
478 views

how to hardwire a car.(dashcam)

video where i check all my fuses: https://www.youtube.com/watch?v=74YimFvXEsQ fuses that lighted up without key: 11 Moonroof (20a) 12 accessory power socket (with idk why it did since it doesnt ...
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1answer
140 views

Front Driver-side window stopped working

Vehicle: 2000 Chevy Blazer 4WD Issue: Front Driver-Size window button is no longer working. Other Details: I checked all other buttons and electrical related things and they all appear to be ...
3
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1answer
60 views

Partially blowing a motorcycle main fuse?

So in the continuing saga of my 81 Suzuki GL450L I have been making continuing improvements to the electrical. The coils as previously found were definitely an issue, but possibly not 'the' issue. ...
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5answers
46k views

Car won't start or stay running after a jump

I have a 2004 Kia Spectra 1.8, I have replaced the spark plugs, the alternator, and my battery is only about two months old. The car will start after a jump but it has to sit for about 10 minutes ...
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1answer
52 views

Alternative location for motorcycle ignition coils?

I recently replaced the ignition coils on my 81 Suzuki 450. The aftermarket coils are just large enough that the tank won't seat right, even after adjusting the bracket. Would there be any issue in ...
3
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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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4answers
50 views

Running my camper on solar

I would lIke to run my camper fully on solar and I'm unsure what I would need to do it right. It would be for heavy use, lights, appliances, tv, ect... I have a 2014 camper that has a 50 amp plug on ...
5
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1answer
1k views

No spark on my new motorcycle

I recently purchased an 81 Suzuki GS450L, my very first bike. I'm not getting a spark. When it dies, it does so silently. No backfire, sputtering, etc. My first thought was that it had aftermarket ...