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Questions tagged [electrical]

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

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Hey I have a 2001 TTR 250 I tried to switch the battery and now nothing turns on at all?

The battery is brand new and charged there was a spark when I first installed it and then I got nothing at all after and not even the light will turn on what is it? Is it a fuse or a wire came loose?
Maartin Ramirez's user avatar
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1 answer
45 views

What is this part for and what is it called?

I recently bought angel lights for my BMW F30 and now it's time to install it. I have already figured out what other electronic components are needed for, but I don’t know what this one is for. Please ...
Yaroslav Yasynytskyi's user avatar
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16 views

2016 Honda Odyssey loses power on highway dashboard lights blink and then shuts down

2016 Honda Odyssey with 100,000 miles on it regularly serviced, lost power while driving on highway. Dash board lights blinked and then after getting to side of road shut down. Won’t start or anything....
user84791's user avatar
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1 answer
21 views

electrical - 12v switch malfunction?

The car is a 1998 Galaxy 1.9 tdi. Swapped an old aftermarket stereo (working) for more recent one. the new one doesn't turn on and now neither the old one! With a multimeter on the car harness, I get ...
Malhado's user avatar
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1 answer
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I couldn't start the car using two different jump starters! UPDATED

I have a 2008 3.5 HL. Last night, my wife was driving the car and noticed smoke coming from the hood on the passenger side (I suspect from the alternator). She parked and immediately turned the car ...
best_of_man's user avatar
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0 answers
26 views

What are the different ways to manage and organize wires?

When I say manage and organize, i do mean in the sense of grouping wires together. For example, if i have 2 wires going to a light, then grouping them together seems like the best thing to do to keep ...
11 votes
2 answers
1k views

Chicken vs Egg Symptoms from 2005 Suburban 5.3 FlexFuel

Please help me figure out if low RPMs on my daughter's 2005 Suburban 5.3 FlexFuel is the cause or a just symptom of problems with oil and fuel pressure. The problem only happens when the engine is ...
AlexPace's user avatar
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'81 toyota battery being overcharged. Replacing voltage regulator did nothing

My 1981 Toyota pickup is showing around 15.3 volts while the engine is running. And after replacing the voltage regulator I have the same issue. I have cleaned every ground in the engine bay. The ...
Ayden Cole's user avatar
1 vote
1 answer
45 views

Can I estimate the health of an old lead-acid battery by its rest open-circuit voltage at full charge?

Cars today use lead-acid batteries for the starting/lighting/ignition system. Hybrid vehicles that start the engine by a high-voltage battery do the same except for starting. Similarly, many electric ...
juhist's user avatar
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2 answers
25 views

Can the trigger voltage to pin 85 of the Novita Part # RL44 solid state relay be sourced from pin 30 through an off/on switch?

I have wired pin 30 directly to a 12 volt battery (thru a breaker). The output from pin 87 is connected to a motor speed controller (PWM). After turning on the circuit, the PWM buzzed for a split ...
Roger's user avatar
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2 votes
1 answer
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Wiring broke off under hood — What did it do?

2010 Silverado 1500 This wire was hanging by a thread from the bolt circled in red (under the hood, below the windsheild, driver's side). The wire broke off when I touched it. What did the other end ...
User1974's user avatar
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2 answers
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Citroen C4 PIcasso completely dead until ignition turned on

So I've just got myself a 2008 C4 Picasso. It runs fine but I've noticed that after locking the car with the remote, some time later the remote no longer works, I have to manually unlock it and the ...
Andyg's user avatar
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1 vote
1 answer
22 views

jeep wrangler 1999

went to drive the jeep this morning and it showed the battery was low, check gauges light, squeaky sounds coming from under the hood, and the blinker sounded different. I went home and then tried to ...
james 's user avatar
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4 votes
1 answer
340 views

Can I reconnect a battery to pull up windows while alternator is out?

I am in the process of changing out the alternator. The old one is out, the new one is not in yet. I won't be able to get to it until tomorrow and I forgot to pull up the windows. Because the negative ...
cryptic0's user avatar
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Sill Protector Illuminated verify lights off

I just got Illuminated Sill Protector Installed in My Car - Mahindra XUV 3OO. I cannot verify with certainty but I feel that the Sill Protector lights remain ON even when the door is closed. Is this ...
Raunak's user avatar
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0 answers
15 views

2000 jeep grand Cherokee blinkers and flashers not working

I have recently purchased a 2000 Jeep grand Cherokee Limited. The blinkers were not working when I bought it was told it was probably just a relay. I have replaced the relay check the fuse check and ...
martin ford's user avatar
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1 answer
41 views

Weak spark with OK coil resistances

I am having an odd behavior with a two cylinder honda gx620 engine. There is no spark on both plugs. While not really an uncommon occurrence all my usual checks have yielded no result. I did the ...
Yanick Salzmann's user avatar
1 vote
1 answer
37 views

Blinker/Marker light issue

Just recently got this issue while replacing the headlight housings on my 03’ Chevy S10. After I replaced them i noticed the right side blinker/marker light bulb had gone out, so i went to O’Reillys ...
Abraham's user avatar
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1 vote
1 answer
236 views

My Honda Odessey loses power all of sudden while driving

My 2016 Honda Odyssey loses power all of a sudden while driving. Everything loses power. Radio gone, speedometer stuck at 38mph, frozen, same with tachometer. I could not open a door or a window. I ...
physicsnerd1's user avatar
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1 answer
39 views

Toyota Vitz (Yaris) 1999–2005 broken side marker mystery

Today I found my Toyota Vitz 2001 car like this: The side marker was broken to pieces and I found it on top of the hood. I initially thought that the connector was missing too (see reference image ...
hb20007's user avatar
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Brass SAE battery terminal clamps. What do these numbers, 300-800 mean?

I'm configuring a solar power generation project and I'm using a 12V "leisure" vehicle battery with standard SAE lead post. My current battery post clamps are heating under use, so I've ...
Douglas Held's user avatar
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0 answers
15 views

Fuel pump on the car not working as the fuel cuts off

I have a Tata Indica 1.4 the car has a new fuel pump inside. When I drive the car cuts electrical power to the pump; then there is 0 volts. After about 20min, the car starts and runs again for about ...
Donavan Roets's user avatar
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0 answers
16 views

1989 Dodge 250 V8 318 camper van

I have a 1989 Dodge 250 V8 318 camper van that I took the motor out of and put it in a swamp buggy the computer has a diagram on it that says it requires an 8 volt supply to one of the wires but I ...
Artatack 's user avatar
2 votes
1 answer
40 views

Wipers no longer working - where should I start trouble shooting first?

Car is a Mk1 Golf/Rabbit. When I first bought the car, only the high-speed wiper setting and windscreen washer jet functions worked. The wipers also did not park automatically. A few months ago I lost ...
MeltingDog's user avatar
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0 answers
19 views

Audi a4 b6 bonnet sensor warning on dash

Can anyone help with the bonnet open on dash. How and where is it best to bypass the sensor. If the wires are left open still have warning and if tied together still have warning? Do i need to bridge ...
Ed ed's user avatar
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0 answers
41 views

2001 Buick Regal LS 3.8L - Cannot identify two wire connector near alternator

What is the two wire connector located in the upper left side of the picture below (near alternator with blue band) for a 2001 Buick Regal LS 3.8L 3800 Series II? It is about three inches long. The ...
user2514157's user avatar
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0 answers
21 views

2008 scion tc electrical issue

Hey there I have a 2008 scion tc manual transmission. I’ve ran into the problem of the car reading 12v at idle, 11.5 when lights and heat are on and 10.9 when driving. I checked that the alternator is ...
Jay sanz's user avatar
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0 answers
81 views

What is this part used for on a 4g92/93 engine

I have problems with a Mitsubishi Lancer that uses a 4g92 engine (basicaly the same as a 4g93) in the troubleshooting process, I've found that if I move the part in the image, the car becomes unstable,...
BryanPV's user avatar
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1 vote
1 answer
44 views

What will happen if you attach the negative pole of welder to the rotor of the motor or the body , will that cause problem?

I have built a machine that rotates a cylinder to weld it, I have to attache a negative pole to the cylinder which is connected directly to the rotor of motor, the motor is controled by a vfd , will ...
Alyamin Smail's user avatar
0 votes
1 answer
133 views

Mercedes A35 AMG 2022, short circuit/won't start/no comms with any vehicle modules

I need some help or direction. I recently purchased a salvage a35 which had undercarriage damage. On inspection it appears the wiring cable underneath the vehicle had been destroyed, chafing the wires ...
Hassan Iqbal's user avatar
0 votes
1 answer
34 views

Honda Terminal Pin

Looking for insight into the type of terminal pin that this is. It is from a 2008 Honda Accord. It measures approximately 5.8 mm wide. Any insight would be greatly appreciated
Wes's user avatar
  • 101
0 votes
1 answer
25 views

16 Honda HRV 2WD Acceleration problem

The Vehicle dash lights on left side lit up and the drive, nuteral, park, and shifter light signal flashing on the dashboard, and operating properly but The Vehicle doesn't go over 40mph and won't go ...
jeremy johnson's user avatar
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0 answers
92 views

How should I wire my dump trailer battery?

Normally this would be a simple task, but this isn't exactly going to be a normal set up. So here's situation. I recently bought a used 14k dump trailer. The hydraulic motor for the dump trailer is ...
Tony's user avatar
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1 vote
0 answers
47 views

2000 Honda Accord EX Brake light strange problem

This has to be the strangest problem ever, 3 out of 4 of braking lights are not working during braking, but all lights are working with the key remote. I did some research on internet, it turned out ...
DropNRun's user avatar
1 vote
1 answer
164 views

Using slightly larger wire for repair

I am trying to repair a car wire that goes to an antenna (powering 'comfort access') that seems to have been chewed up by some animal / insect / rodent -- the original wire is a 20/22 gauge wire and ...
AnchovyLegend's user avatar
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0 answers
36 views

Seat Cordoba 6K2 (2000.) Not work central trunk locking, manual works

I have a problem with central locking trunk on Seat Cordoba 2000. year model with Signo packet of equipment. Manual locking is working. I have try locking motor connect to 12V source, an it works. ...
Mario Vrhoci's user avatar
0 votes
1 answer
57 views

1948 Ford Farm Tractor

A friend of mine asked me to look at this tractor because it would not start. My background is in auto repair. The engine turned over but no spark. The points would not open because the rubbing block ...
Frank's user avatar
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10 votes
7 answers
4k views

Jump-starting a car: connecting black to the engine block

I recently found out that when jumping a car, you should not connect the black connector to the recipient vehicle's battery, but rather to a grounded point on the car. The expressed purpose is to ...
Cort Ammon's user avatar
3 votes
1 answer
342 views

How do I fix a broken connector inside the transaxle?

Problem I was trying to replace my shift solenoids, and when I pulled the electrical connector off of one of the solenoids, the plastic tab on the connector broke off. I'm concerned that if I leave ...
Charlie Armstrong's user avatar
1 vote
0 answers
46 views

1988 nx Honda 250 No start has fuel, compression, spark

I had to wire the bike up myself bypassed the ignition, lights an all that to get it to spark got a brand new carburetor for it I have half the exhaust off so when its cranking sometimes it will shoot ...
Whodatjamalio's user avatar
0 votes
0 answers
34 views

Engine swapped my KIA but dont get a spark

I engine swapped my KIA optima 2.4L N/A with the 2.0L turbo variant, however when I use the original 2.4L N/A ECU I get spark from the plugs but when I swap the ECU to the 2.0L turbo variant I get no ...
Darius Nicoli's user avatar
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0 answers
11 views

2017 VWPassat RLINE 1.8T

I basically put some acidic and corrosive fluids inside of my windshield wiper reservoir tank didn’t notice it until a few weeks later and plenty of trips, using my fluid and cleaning my windows that ...
Mbuser79593's user avatar
1 vote
0 answers
54 views

2009 Jaguar xf 2.7 diesel battery issues

Car wouldnt start this morning and battery reading 11.66 v on the multimeter so time for a change I think.Looked to see the age of the battery and found this inscribed on the top of the battery.......
macaverty's user avatar
3 votes
1 answer
879 views

Does the kilowatt rating of a starter indicate anything about the torque or quality of the starter?

I have been shopping for a starter for a John Deere Gator. The OEM starter is 0.9KW. There are several aftermarket starters that replace the OEM part number. The advertised kilowatts vary from 1 KW ...
Braath Waate's user avatar
3 votes
3 answers
547 views

1980 Oldsmobile 98 electrical system went totally off after attempting to start it

Car has been sitting for 2 years. It had previously ran perfectly. I purchased a new battery. I checked cables and installed battery. Turned the ignition to on without attempting to start it and ...
Richard L's user avatar
1 vote
1 answer
1k views

2021 Toyota Venza Lighter Fuse Location

I had a radar detector hooked up to cigarette lighter outlet when all of a sudden the outlet lost power. I tested with other 12V cig cables to confirm and it indeed has no power. As the first step in ...
Dean Kuga's user avatar
  • 113
3 votes
1 answer
943 views

2005 Chevrolet Express 3500: Help Identifying this part

I have a 2005 Chevrolet Express 3500 (cut-away converted into a shuttle-bus) which I've stripped bare and slowly doing a mini "schoolie" RV conversion. While changing the spark plugs today, ...
brhans's user avatar
  • 156
0 votes
0 answers
20 views

2020 chrys Pacifica horn won’t blow; Adaptive Cruise cntrl and More won’t work after minor bump to front left corner of bumper

Had minor bump to the left corner of the front bumper. NOw the horn won’t blow; the ACC Adaptive Cruise Contl; Forward Collision Warning won’t work. Engine runs hot at 240 degrees instead of normal ...
TommyO's user avatar
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1 vote
1 answer
106 views

2004 Honda Civic EX coupe: What would cause positive voltage on the ground strap to be present?

I left work, about 2 miles of city traffic then onto the freeway. While on thr freeway, only a few minutes, I noticed thr check engine light was blinking (which I know isn't good and i should stop). ...
mattbmenifee's user avatar
0 votes
1 answer
259 views

What might be causing both downstream O2 sensors on my car to not show any activity?

I just bought a 2004 BMW 325ci as a project and have been trying to fix it up. Scanned it and got a couple of codes which I thought were because of a vacuum leak so I smoke tested it and turned out ...
AECH's user avatar
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