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Questions tagged [electronics]

Electrical components that monitor or control the engine and other vehicle systems, or that provide entertainment, information, or network access. Engine Control Units (ECUs), their sensors, radios, navigation systems, and rain sensors are examples of *electronic* components. Compare with *electrical* components which distribute, switch, and consume electricity as a source of power – such as the battery, alternator, fuses, lights, starter, and sparkplugs.

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S550 Mustangs - route wire from fuse panel to center console?

Are there any tip and tricks to routing wire from the passenger footwell fuse panel and into the center console? I'm looking to add an accessory that would require a power cord to pop out right below ...
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Will a magnet mount affect the performance of a radar detector?

I am in the market for a Uniden R3 radar detector but I'm not really enthused by most of the mirror mounts out there. It distracts from my line of sight to have something up on my mirror like that so ...
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28 views

Honda Civic 2000, Engine Control Unit replacement

I need to replace the engine control unit, ECU, of my Honda Civic 2000, my car doesn't have an immobilizer, it starts with a basic metal key, so, do I need to program the used ECU replacement?
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RX 300 (2001) doors lock/unlock problem

I have Lexus RX 300 (2001). 3 doors starts not responding to lock/unlock in most cases. But sometimes works. Only one rear and trunk doors works correctly. Also works correctly manually with keys....
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1answer
27 views

Windshield Wipers turning on on their own

2012 Ford Focus SE My windshield wipers have been going crazy. The other day, after parking my car and taking the key out my windshield wipers turned on. Eventually they stopped after a few minutes. ...
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1answer
21 views

Audi A7 - 2016 model without parking assist: is the installation of the module “plug & play”?

I have the intention of buying a used Audi A7 Sportback from 2016, without the "parking assist" option. Since i'm a newbie to this kind of stuff, i was wondering if it's something i can install myself ...
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1answer
24 views

Backup lights, monitor and alarm sometimes don't work when backing up

When I switch the stick to R on my automatic gear, the backup lights, monitor and alarm sometimes don't work, sometimes do. It feels as if it's random when there's current in the wires. When they ...
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27 views

How do you quiz the electronics of a Mercedes?

I am planning to inspect a 2012 Mercedes S550 for possible purchase. How do I interrogate the electronic system of the car to get information about things that currently may not be working, or about ...
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30 views

2005 ford f150 5.4 triton

I have acquired through an auction a 2005 f150 FX4 with a triton 5.4 engine. It has sat indoors idle for about nine(9) years. Cab corners are the only body issue. Battery has gone dead at some unknown ...
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2answers
32 views

Can't find fuse for radio

Honda Accord 2012 has 3 fuse panels and no fuses labeled radio. I have checked several labeled accessories and can't find blown fuse. Can you icentify correct fuse for radio?
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Electronics Flicking on and off

so last week I pulled the rocker cover off my Celica 7th gen to get at the broken lift bolts (typical), also cleaned MAF sensor and throttle body while I was at it. After putting everything back ...
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Is there a way to transmit a CAN bus signal over a high current DC line?

I would like to use a high current cable with batt + and chassis ground from the vehicle to the trailer, and also use the same cable to transmit a CAN bus signal to the trailer. Is there a way to get ...
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1answer
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91 Buick Regal radio/amp replacement

I have a 91 Buick Regal sedan that some part of the car stereo has died on. It turns on but I cannot get any audio out of it. It seems that the radio and amp are contained in one unit under the glove ...
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cigarette lighter is always on

In my 2006 ford ka the cigarette lighter socket is always on, which means that when I turn off the engine I have to unplug the USB thingy I've got in there. It's a bit annoying and I'm constantly ...
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2answers
39 views

How can I swap wires/pins on generic aftermarket O2 sensors?

I purchased some generic aftermarket O2 sensors for my 2002 Land Rover Discovery 2, which were significantly cheaper than the "official" Land Rover replacement parts. Unfortunately after installation,...
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2answers
63 views

Boat Alternator Charging 4 Batteries 70 Amp Draw 50 Amp Charge

This is the current situation, looking for some expert advice. Total amp draws with night time running lights + GPS + other accessories I am at about 70 amps. My alternator puts out max 50 AMPS ...
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1answer
64 views

Damaged pads on PCB after trying to replace LEDs. How to repair?

I'm replacing the SMD LEDs on my instrument gauge cluster in my truck with a new color LED. While attempting to remove one of the original LEDs, the solder pads came off from both the positive and ...
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1answer
28 views

Will a loose positive terminal cause damage to a car?

As I was driving my car on the usual daily commute, I noticed the dashboard started dimming as my blinkers were blinking. Scared as to what could've caused this, I stopped and opened the hood where I ...
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1answer
39 views

Passenger front blinker, rear blinker & brake, and middle brake lights all out

I've got a 2008 Chevrolet Cobalt. The passenger front blinker, passenger rear blinker & brake light, and the middle brake light are all out. The hazard lights also do not work on the passenger ...
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1answer
177 views

Peugeot 307 multiple error codes, same cause?

My sister was driving her driving her Peugeot 307 XS 1.6 2006 the other day, and out of nowhere all these error messages start popping up on her screen. It started with "Battery charge or electrical ...
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2answers
44 views

Installing electronics next to SRS Airbag controller in car

I have bought an add-on for my car stereo (GROM USB3) which adds USB and Bluetooth capability for playing music and answering calls. This module is contained in a little box with 4 ports, and connects ...
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0answers
33 views

Missed a connector in my AC system?

I just changed the heater core in my 1999 Subaru Legacy Outback. I had to take the dash out, and disconnect many connectors. After putting it all back together, my heat now works (yay!), but my AC ...
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0answers
50 views

Blower resistor 2x3 connector replacement

I had an issue in a Citroën C4 2008 where the blower would work on settings 1-2-3 but not 4 (max). I took out the resistor and found this on the connector that plugs into the resistor: As can be seen,...
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109 views

Dashboard lights blinking wildly

Here's a video of my Subaru Forester dashboard. Temperature, cruise, skid control, maintenance lights are on randomly and blinking. I'm guessing all of these problems are related. What could be the ...
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1answer
105 views

Keyless car won't shut down

My car , a keyless car Peugeot 4008, won't start or shut down. The first time , when I pressed start, the screen light up then the swippers and lights turned on and won't stop and everything stopped ...
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1answer
45 views

Electronics only work occasionally

I recently got a 2000 Mercury Villager Estate. Most of it runs fine - AC, interior lights, headlights, etc. Some of the electronics -- radio, windshield wipers, some of the power windows (I don't ...
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1answer
31 views

Is it possible to add keypad entry in vehicles that were not designed to have it

I have a very old car - a 1993 - and the power locks simply by putting the actuators in a series circuit that is energized by routing through the switches. Is there any way to add a keypad entry (...
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318 views

2006 Honda Civic door locks won't work when key is off

We have a 2006 Honda Civic which has recently begun having an issue with the door locks. The power door locks will only work when the key is in the ON (II) position. If it's not in that position, then ...
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1answer
335 views

2013 BMW electronic oil level check fails to complete

My wife's car is a 2013 BMW 335i with M-Sport package. The engine has no dipstick so the only way to check the oil level is using the menu-driven display. However, this never completes. ...
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1answer
3k views

How to set the clock in a Honda City 2018

I've done it once before (last daylight saving change) but even with the owner's manual I can't work out how to set the clock. I've tried with both the car on and just in accessory position but ...
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0answers
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Which Directed Electronics Module is This?

Isn’t water a wonderful thing? My '76 Corvette had a water leak in the windshield and the rain obliterated a module that was installed under the dash. I bought and installed it around 2012 or 2013. ...
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0answers
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2000 Jeep Grand Cherokee Console not working

I am an owner of a 2000 Jeep Grand Cherokee. The roof console (the display attached to the center of the roof that normally displays compass direction and such) does not display anything. No idea what ...
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2answers
3k views

Car speakers making humming/crackling noise after installing aftermarket stereo

So over a year now i had installed an aftermarket stereo which worked perfectly fine for a couple months after installing it properly making it a molex connector as a new harness. Fast forward, the ...
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Simplest installation of car-powered car-pc

Am posting here as this question seems to be considered off-topic on both the electronics and the Raspberry sister sites. Would like to install a carputer (Raspberry Pi), and am wondering about the ...
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Are mechanical relays still used for turn signal circuits? If not, where does the clicking noise come from?

I noticed that when I activate the turn signal of my 2017 Jeep (full of computerized electronics), the flasher makes a very mechanical sound, just like cars have done for I-don't-know-how-many decades....
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1answer
20 views

2010 Focus OEM satellite radio

I have a 2010 Ford Focus S. I noticed a Sirius radio button and phone button. The Sirius button will trigger a “no satellite radio” message, and the phone button triggers “no phone”. After looking ...
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2answers
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Does disconnecting the battery have negative side effects?

A recent answer at a sister site suggested disconnecting the battery routinely. I often disconnect my battery before embarking on a hike. Especially if I am in a remote location. This is a nice way ...
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Battery gets discharged…sometimes!

This is one of those intermittent issues driving mad any car driver: What I have: New battery, new alternator brushes, new current regulator, new belt. Polished brushes tracks. All properly ...
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3answers
451 views

Unable to locate the power wire for dome light

I own an old Maruti Suzuki WagonR (2009) which is not having a dome light in passenger area. I want to install a LED light there but can't locate the power cable coming from battery. Since the car is ...
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1answer
11k views

Why do we use a relay and switch to control on/off of horn circuit instead of using a simple swtich?

I know that a horn requires a larger amount of amperes to operate than many other electrical systems. I am reading a book and I stepped into this situation: ..shows a relay application in a horn ...
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1answer
39 views

Modifying Pioneer Radio

I would like to add iPhone integration to an old Honda Accord. Pioneer makes a nice line of radios that integrate well with iPhones. The feature that stands out to me the most is the ability to launch ...
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0answers
490 views

Need service manual for Mahindra Scorpio CRDe 2006 model

I am trying to diagnose a problem with the ECU of my Mahindra Scorpio, I am looking for Fuses and Relays where it's being located, Specifically looking for schematics and wiring diagram of my car.. ...
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1answer
67 views

Wish to charge battery in caravan from car alternator while travelling

I would like to run the 12 volt capability of my 3-way caravan fridge whilst travelling rather than the gas. If I put a 12 volt battery in the caravan what system do I use to charge this battery from ...
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1answer
211 views

Open source OBD II scanner hardware without ELM or STN

We have built an OBD-II scan tool using an STM32 microcontroller and it works for most vehicles. But occasionally our device fails to detect the OBD protocol, whereas the OBD scanner (ELM) will detect ...
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4answers
703 views

How to remove engine noise from audio player?

I connected the speaker output from my car audio player directly to speakers working fine for me. But i have to connect it with another speakers which is connected with an amplifier. So i reduce the ...
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3answers
640 views

Why did the old-school thermal flashers remain in use for so long?

I'm rebuilding an MGA and i'm at the point of revising the electronics. Today I was making a DIY flasher with a simple RC circuit. This will replace the old thermal flasher which depends on the right ...
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1answer
29 views

Want to direct wire Sirius radio to delayed shutdown of car radio

I used a fuse tap to direct wire my Sirius radio and tapped into a fuse that shuts off when I turn the car off. I didn't tap into the car radio fuse because it was still live when the car was shut off....
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What are the stereo voltages?

I have some ideas for a rear facing camera, AI, and communication servers I would like to add to my car ( a 2006 ford focus). I can handle all of that set up, what I have no idea about is the power ...
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How to install bluetooth in a 05 Lexus ES330?

I’ve promised my girlfriend that for her birthday I will install a bluetooth system in her car like I have in mine. The day I got my car I simply had the head unit replaced with a new one with ...
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1answer
2k views

How can the connections of an aftermarket wire harness be joined to a stock harness?

I didn't see this question asked before under the tag audio and after searching [audio] wire harness I was curious to know what are the ways you can securely connect an audio wire harness to a factory ...