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

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3
votes
1answer
12 views

Where is the voltage regulator on a Honda wave 125cc?

Where can I find the voltage regulator on my Honda wave 125cc? I need to replace it with a new one so that my head lights will be in good condition and work well.
3
votes
2answers
25 views

Yamaha Gladiator SS 125 model motorcycle engine problem

I have Yamaha Gladiator SS 125 model motorcycle. After repairing the engine there has been one problem in my engine. It is that the mobil from the engine flows towards the air filter and then the same ...
1
vote
0answers
7 views

Suzuki electrical failure after rain

I have a Suzuki Marauder, believe its 2000. I left it out in a heavy rain. When I tried to start it after, I turned the key and all the lights went on per normal, but when I pressed the starter button,...
4
votes
0answers
22 views

Cant Start 08 Civic (Diagnosis)

So I just bought this 08 civic LX (110k miles). After a few days of flawless driving, we noticed a couple wires NOT connected that were coming from the hood opener-sensor thing. Plugged them together ...
11
votes
4answers
887 views

Is 60/40 solder fine for splicing wires that have to endure hot engine bay temps?

I need to splice the pigtail connectors from my old O2 sensors onto the new O2 sensors since the new connectors have a different shape. As the sensor is right behind the engine and will experience ...
2
votes
0answers
16 views

Windshield wipers on '98 Chevy S-10 work sometimes but not all the time

I checked the fuse and wiring, they are okay, don't know what else it might be. BAFFLED. I think there is a motor and board, but don't know why it works sometimes and sometimes not.
6
votes
0answers
33 views

Intermittant starting problem

1967 Camaro SS 350 with Powerglide trans. sometimes will not start. No click, no dimming of lights when key is turned, nothing happens. It will do this maybe one time out of 15 or 20 starting ...
3
votes
3answers
59 views

LED Blinkers - Burning out on 1976 Triumph Bonneville

I have a 1976 Triumph Bonneville and recently replaced the garbage LED chips inside the eBay signal lights with brighter Cree LED chips. I bench tested the circuit shown below with a 12v bench supply ...
5
votes
1answer
24 views

Idle doesn't hold on 2006 Toyota pick up truck after giving a jump, actually failing to give a jump.

We have a 2006 toyota pick up truck and a 2000 mustang with a dead battery. Cable's have been Properly connected. 1, I can get no current flow, no jump from the toyota, yet it starts the pick up ...
4
votes
1answer
40 views

What voltage does the ECU need?

I am tracing the operation of the ECU. I want to supply it with power but what is the ECU voltage input that I should supply?
4
votes
2answers
23 views

2002 Honda Civic over heating fan does not comes on

I need some help. My girlfriend has a 2002 Honda Civic that keeps overheating. The fan doesn't turn on. We tested both fans and they work properly. We changed the thermostat, the cooling fan switch ...
2
votes
2answers
21 views

Higher CCA in batteries in warmer climates

If a battery with a higher CCA capacity is used in a warmer climate, would it effect the battery's performance in the longer run?
6
votes
1answer
34 views

How to diagnose low alternator output

My car (a 1991 Citroen BX 1.4) has been giving me alternator problems since I got it, the alternator failure came on every now and then and dimmed or disappeared when I revved the engine, my first ...
7
votes
3answers
929 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
1answer
188 views

Two 12 volt power sources into one device

How can I power one 12 volt outlet (feeding a XM radio transformer) from two separate 12 volt sources on a RV (ignition and coach power). Is it feasible to use 2 diodes?
2
votes
0answers
40 views

Need help installing Pioneer car stereo in 2006 Hyundai Sonata (power antenna)

I have a 2006 Hyundai Sonata and am switching over my brand new radio from my old car. The radio I have is a Pioneer AVH-2800BS. According to Crutchfield (which I know and trust by heart!), it says "...
2
votes
1answer
25 views

Intermittent power failure in hot weather 2007 Escalade

We have a 2007 Escalade with 160k miles. The car runs great normally, but when the weather gets hot, an array of warning lights will come on from time to time, the power will drop for a moment (radio ...
4
votes
1answer
15 views

2006 Hummer H3's radio (Pioneer NEX 4200) turns back on after the car is off

I am having an issue where after my car is off for a while the radio will turn back on and stay on until the battery is drained. I have had a large Chevy dealership along with Best Buy's automotive ...
4
votes
2answers
122 views

High beams work, low beams do not. What is wrong with headlight?

I have a 2000 Jeep Wrangler TJ and the high beams work but the low beams don't. I replaced one of the relays under the hood and the high beams started working but the low beams still don't work. What ...
5
votes
0answers
28 views

Discharging alternators

I had to replace the original alternator on my '99 Z28 Camaro in January and have had 3 after market and 1 OE and all continue to discharge with air and radio on. Mechanic says it is fine but I think ...
4
votes
1answer
12 views

Hydraulic pump receiving power but not running

I have a Mk1 Golf Cabriolet with an hydraulic roof. Today I went for a drive and whilst the roof lowered as normal, I could not raise it again. I checked the fluid levels and they're fine. There is ...
5
votes
0answers
63 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 ...
6
votes
6answers
30k 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 ...
3
votes
4answers
52 views

Ideas for rewiring headlights – convert from halogen with DRL to HID + LED DRL

I need some ideas. My 2009 Ford F150 pickup uses the same wire for daytime running lights (DRL) and "full" headlights. The stock setup was halogen bulbs with full brightness receiving 12 V and the DRL ...
6
votes
1answer
179 views

Does a constant blown fuse always indicate a short?

My wife was driving our 96 Ford Windstar recently and she said right after she hit a bump in the road the ac stopped working and the instrument panel lights went out. I found the fuse from the wiring ...
2
votes
1answer
34 views

Will new 100 watt headlights be too much on battery?

I want to install these new powerful headlights but they use around 100 watts. I have a 12v 45Ah battery which gives me around 540wh. Now I know that's not even half but when you factor in all the ...
7
votes
0answers
26 views

Coolant Level Sensor Connector Replacement

I'm looking for a replacement male connector to fit this coolant level sensor from a 1989 VW Jetta. Finding replacement sensors is straightforward, but what does one do when repairing a missing ...
10
votes
3answers
156 views

350z cranks won't start

2003 350z cranks but won't start VQ35DE Here is my short history: Flywheel and clutch installed 1 month ago =Car worked fine +Cranksensor was added =Car worked fine -Car started to shut off while ...
7
votes
1answer
111 views

Battery tender vs trickle charger

I understand battery tenders are used to keep batteries charged for long term storage, and trickle chargers are.... also used to charge batteries? What are the differences between these two devices, ...
4
votes
1answer
29 views

Is the diagnosis from a battery/starter/alternator tester meaningful?

At many auto parts stores they will test - often for free - a vehicle's electrical system by attaching a device to the positive and negative terminals of the battery. That's all they do. Then you ...
12
votes
2answers
221 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 ...
9
votes
3answers
623 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)....
4
votes
1answer
54 views

1999 Jeep Cherokee 4.0L electrical problems

I am new to this and in need of some advice. I just purchased a 1999 Jeep Cherokee 4.0L, with 211,000 miles and have some electrical problems. I noticed that one of the two green wires on the back ...
3
votes
1answer
21 views

Electrical reverse lights stay on

We recently purchased a restored 1971 chevelle ss. They did an excellent job. I just noticed that the reverse lights are always on and assume it something with the switch. Where might I look for the ...
7
votes
4answers
5k views

Should only the left “Rear Fog Light” actually light up in a pair?

On a 2003 Saab 9-5 Aero, only the left rear fog light lights up. The right side has a bulb but when I switch the bulbs, the left still is the only side that lights up. I thought it might be a wiring ...
5
votes
2answers
38 views

04 Mercury Montery stalling while driving

While driving on the highway my van stalled. Once on the side of the road, I tried to restart and no joy. All indicators and lights came on but when I turned the key nothing happened. I jiggled he ...
8
votes
1answer
307 views

battery tender keeps charging

Results for: so I have a motorcycle and use the Optimate1 battery tender. One day while using the tender I left and came back 6 hours later to find the Optimate still charging my battery. The battery ...
8
votes
4answers
743 views

How can a fuse drain a car battery?

My car battery drained itself after a week of not being used. I was researching how to identify the cause, and saw a comment under this article saying: What if I am not detecting a reading but the ...
5
votes
1answer
24 views

Trailer socket problems

I have a tow bar and a seven pin plug to operate the lights, fitted on my car. I recently took my boat for repair and when they brought it out of the workshop they dropped it from a forklift truck ...
8
votes
2answers
1k views

What is this? maybe a sensor?

I discovered this loose tape connector while fixing a coolant hose by the heater matrix. There are two more of these attached to the very bottom of the windscreen glass on each end, the loose one ...
2
votes
0answers
12 views

97 Ford Ranger occasionally won't start

It just recently began not starting every once in a while. Not a click, nothing. If I turn the key backwards the radio comes on and I can turn the lights on. Then after a few tries it starts up and ...
5
votes
3answers
35 views

Is my battery draining while car is off?

How much current in amperes is flowing while a car is completely turned off? How long can it sit before battery is drained enough to be a problem?
0
votes
2answers
30 views

2000 Ford Focus will not start

After turning the ignition the car will not make a sound. The radio works, and all the lights work except the headlights. What could be the problem?
4
votes
0answers
27 views

Toyota Celica ST185 problem, doesn't start

Hello i have a problem i own a Toyota Celica ST185 Carlos Sainz Limited Edition. (btw. English is not my national language so sorry for eventual errors). The problem is that car has problems with ...
9
votes
6answers
2k views

Fuse box above battery melting

I have a 2001 VW Beetle which has a nasty habit of melting the above battery high voltage fuse box. I've replaced it three times already and replaced the alternator as well, but I'm at a complete loss ...
6
votes
2answers
45 views

Does Coil rewinding have a negative impact with the existing system?

I have a question towards the rewinding of a coil. Here is the tech spec of the bike:- Battery : 9 Ah, 12 V Generator : 12V, 100 W Fuse: 12V 10A My bike comes with an electrical spec of DC (...
1
vote
0answers
41 views

I cannot identify this 2004 Volvo S60 part

I'm selling my car and currently it sits and seeing as I'm not driving it every day I check on it every so often. When I checked today there was a small part that is connected to a tube leading into ...
9
votes
2answers
67 views

No power but battery, alternator, and connection are good

This involves a company truck, 08 Chevy Silverado. I am not a mechanic or DIY nor do I play one on TV. The problem I am having is that every 2 or 3 months this truck will not start and completely ...
13
votes
1answer
136 views

How to determine exactly what's wrong with my alternator?

My 98 Mazda 626 GF 2L uses an 80 amp fp34 A2TB0191 alternator with an internal voltage regulator. I did a little test where it I turned on the bright lights, AC, radio, rear defogger and opened the ...
1
vote
0answers
18 views

Installing a 3rd party radio in a VW Polo

I am finding it hard to understand why I need run a 12v wire as well as use a Quadlock to ISO converter. The current VW radio clearly gets power from its connector and is able to tell if the engine ...