Questions tagged [wiring]

For questions about the wiring of a car(apparatus that connects electrical circuits).

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Mazda rd 8 2005

Ok I need help I’m trying to connect my AC fan and my coolant fan back to original connection I had disconnected and had rigged to where when I started the vehicle it would start the fans now I fixed ...
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Two A/C clutch diodes?

'07 Cobalt. A/C clutch fuse was blown. The clutch circuit now reads open to ground, so it seems something catastrophic happened. I am considering what a repair would involve. The schematic (below) ...
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Possible to have damaged wire that beeps on continuity check?

I suspect I have a issue on one of the connectors in my harness, so I'm testing the loom for continuity on switches contacts and connector pins etc. following the schematic. I'm wondering is it ...
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1 answer
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Alternator connection is bad

So I have a problem where one of the wires connecting to the alternator comes loose and stops charging my battery. I have an 08 Honda Accord. I have pulled the wire out and attempted to clean the ...
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3 votes
1 answer
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Replacing driver door wiring harness 2012 Ford Escape

I'm trying to replace the driver's door wiring harness on my 2012 Ford Escape, and I can't seem to get the main connector (at the hinge) disconnected. Is there a trick to disconnecting this? Do I ...
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no sound when turning key, but battery should be fine

I know it isn't the battery. I just had the charge checked, and it starts... Sometimes. But the majority of the time, I turn the key and there's no noise under the hood. The door indicator beeps when ...
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2003 Mini Cooper S headlight not working

I have a 2003 Mini Cooper S, the main near side headlight is not working. The rest of the lights on the near side work. I have changed the bulb, and I have swapped the ballast over with the offside ...
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2 votes
1 answer
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Can DC grounds for 48V to 12 Volt Converters be shared?

In my RV, I've run batteries in a series for 48 volts. I'm running that 48 volts DC to (4) 48V to 12V converters. These Converters have a NEG for the 48V input and a NEG for the 12V Output. My ...
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7 votes
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564 views

What are these unused dash plugs on my E-350 (cutaway / bus)?

I opened up the dash on my 2012 Ford E-350 cutaway (with a Starcraft Allstar bus body) to replace the factory radio. In addition to the wire harnesses (and vacuum lines) for the HVAC, 12v plugs, and ...
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3 answers
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Can an insulated copper wire oxidize down its ENTIRE length?

I was doing some electrical wiring on a snowmobile trailer today and was surprised to see black instead of shiny copper when I cut and stripped a section from the middle of a long section of ...
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1 answer
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Moto Guzzi V85tt -- Immobilizer antenna short circuit error B0005 after light install

I recently added some auxiliary lights to my V85tt motorcycle. I used Cyclops lights with a Skene controller to tie them into the high beams. They are sold as a pair. I believe everything was ...
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Deciphering Wiring Harness Diagram

I am an electronics enthusiast and I am helping a friend decipher a wiring harness diagram for his vehicle. He sent me the attached image to help him figure out what wire goes to where, but both he ...
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RV inverter wiring

I would like to install an inverter in my 5th-wheel. I want it wired into the panel so that the trailer will switch between shore/generator/inverter automatically. The problem is, there are a few ...
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1 vote
1 answer
184 views

What does the dashed box mean on this wiring diagram?

I couldn't find an automotive mechanical stack exchange, so hope this is ok here. This is a partial wiring diagram of the PCM on my truck (2011 Dodge Ram). I am trying to find the Driver Unlock Relay ...
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1997 Subaru Legacy won't start after shorting ignition switch

My 1997 Subaru Legacy was recently stolen and recovered, and the thieves broke the ignition switch -- the key simply will not turn. As I was removing the ignition switch, I noticed that on the back, ...
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1 answer
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Obd2 not working, need to rewire

1996 chevy p30 5.7L Obd port wasn't working. After I looked under the dash it's apparent someone has cut all the wires and never wires them back in. I guess there was front end damage so I assume they ...
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How to correctly test voltage on taillight/trailer plug/harness?

Vehicle in question is a 2007 Toyota Rav4 Limited with the 3.5l V6 and has the factory tow package. I have a trailer harness in which the green pole, aka the right/passenger side turn signal, is ...
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Do they make a under front car seat wire connector protector

under front car drivers seat wire connector protector 2017 Camry LE my dog puppy like to pull on the wires. has anyone made a cover or anything to protect these venerable connectors to pets, if so ...
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What is the name of a default closed switch?

I have a 2005 Ford Excursion. It has a parking sensor which beeps when it senses something close to the rear bumper. When pulling a trailer, it beeps every time I put it in reverse. I can turn it off, ...
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1 vote
1 answer
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What are some good ways to trace wires in an engine?

Something chewed the wires in my car's engine recently. What are some ways to trace which wires goto which components? Backstory: a few months ago, my car started acting funny. One of the blinkers ...
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Starter not engaging motor

I have a 1986 Kawasaki bayou 300 that the starter is not engaging the motor. I put a brand new starter on and didn’t fix it. Also put on a new starter solenoid and still didn’t fix it. I checked every ...
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Brand New EGR Defective, wiring harness problem or both?

I just installed a brand new EGR on my neighbors Peugeot Partner II 1.6L HDI Turbo Diesel. As soon as I connected it and tried a bidi self test I got a bunch of codes. Cleared the codes, and now ...
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2 votes
0 answers
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2006 accord power lock wiring question

I'm not sure if such a specific question is appropriate here, but: I have a 2006 Honda Accord Coupe EX with nav. and MT. The Power Window Master switch in the driver's side door is from a 2003 model. ...
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Should I replace wiring harness? If yes, how to do it?

My Hyundai Tucson 2013's fog light is not working. Also a bulb in cabin which is supposed to stay steady is blinking. I suspect this could be because of the voltage drops and electrical faults. I ...
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Hyundai battery drain

My car battery drain i checked all the fuses with series connection of ammeter in battery negative always showing 0.85A what is the reason can any one please tell me. My car is HYNDAI I20 Magna 2012 ...
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Help Identifying Wiring Harness

I need to find out what this goes, the year and I think it’s to a corvette eco and wiring harness but don’t know for sure Help [![enter image description here][3]][3] [3]: https://i.stack.imgur.com/...
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1 vote
1 answer
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I have an Opel Astra H 2008 Bluetooth adapter and need to install a power switch for it

So I have a 2008 Astra H with the default radio. I have installed a CTAVXBT001 Bluetooth kit. I want to be able to switch it on/off by adding a switch to the adaptors wire. I have my soldering kit ...
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2 answers
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Trying to find an answer for my 92 Dakota not turning over

I've changed the neutral safety switch and checked the wiring from the battery to the starter and the it still nothing but i can start it off the solenoid and it runs like a charm any suggestions
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What is the correct ammeter wiring?

I bought an ammeter which I would like to connect in my car. This ammeter is a gauge available on Aliexpress and has only two poles (some ammeters have a third negative pole). I wired from one side ...
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2 answers
327 views

What relay do I use to power aux lights from two separate switches

What type of relay is the picture below? I am wanting to power some aux LED lights but would like the ability to switch them and have them come on with the high beams when they are switched off. I ...
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Amplifier draining battery

I have a 2005 Chevy Avalanche with a parasitic draw. I have it narrowed down to the factory bose amplifier and had already replaced it with no change in the current draw. I had disconnected the radio ...
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LED bar power directly from battery?

I am soon going to install a LED bar on my Hyundai Tucson 2006. I want the lights to go on whenever the high beam is activated. I have located the fuse for the high beam, and intend to use an adapter ...
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What's happening with my alternator?

So, my car has blown up to 6 alternators thus far. Luckily I had a life time warranty replacement on it and did not have to pay for it. Autozone is definitely going to void that warranty on my next ...
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Choose Correct Diode

I had to do some creative wiring on my car's A/C to get it working without a $1000 repair bill. Now the A/C works perfectly, but I need to isolate the current on one of the wires to so that it only ...
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1 answer
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Head unit ignition switch wire has constant power

I have an aftermarket head unit in my 2014 Jetta that I installed myself. After several times waking up to a dead battery when I was sure I didn't leave the radio on, I decided to kill all power to it ...
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2 votes
1 answer
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What type of trailer plug is this?

I can't for the life of me figure out what type of trailer light adapter this is. It's on a 2006 Toyota tacoma. It doesn't fit any standard 7 way plugs. I have an adapter that looks similar but the ...
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1 answer
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What type of terminal pins do radio harnesses use?

Brief backstory: I got a car that was a great deal and the radio is the only thing wrong with it. They told me that while they were swapping out the OEM radio it wouldn't accept the new one and then ...
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2007 Mercury Montego V6, Need to test the alternator output independent of the wiring harness and computer

We've had the alternator rebuilt once and replaced it entirely with a brand new one. We've replaced the battery twice. Mechanics keep insisting it's the alternator. And I quote "it's never the ...
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1 vote
3 answers
5k views

2006 Chevy Factory Stereo Wiring

I'm replacing the stock stereo in my 2006 Chevy Colorado. All of the diagrams I've seen online show that A1-A7 are unused example but A1 and A2 have a similar, smaller wire (see picture). The adapter ...
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1 vote
1 answer
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2011 Hyundai Accent AC compressor doesn't kick in

I own a 2011 Hyundai which is known as Accent model in the US. The problem is my AC doesn't work, namely the AC compressor clutch doesn't engage when turned on. What happens is when the AC button is ...
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Why would dome lights stay on, yet moonroof work perfectly? (One unit) 2007 Mercury Montego Premier

I replaced the unit, but the lights still stay on while the moonroof control operates the moonroof exactly as it should. The one without bulbs is the old one. Removed them to save the battery prior to ...
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2007 Mercury Montego Premier Various Electrical Issues [closed]

Recently purchased an 07 Mercury Montego Premier for a secondary vehicle/work vehicle. Engine seems to be great, but there are various minor issues that just annoy me. Driver's side window works, ...
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1 vote
1 answer
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Wiring electric helmet directly to snowmobile battery

I have an electric snowmobile helmet with a RCA plug and not instructions. The black wire has a connector for the screw terminal on the battery, but the red wire is bare. What do I connect the red ...
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3 votes
1 answer
154 views

Correct gauge of wire for earth/ground

One of my ground cables, which links the battery to the gearbox has snapped. I used a caliper to measure the diameter of the wire, and it is approximately 6mm in diameter (so i calculated this to be ...
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1 vote
2 answers
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Finding wire for "Unused Fuse"

There are many unused fuses populated in my 2010 Ford Fusion's interior fuse box. I've tested with a voltmeter and the fuse I have in mind turns on and off with the ignition, which is what I want. Now,...
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Wires cables hoses and bushings

What purpose does changing to braided hoses, polyurethane bushings and the sort do to improve performance and reliability in general
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310 watt light bar on 12 volt car battery [duplicate]

I am currently looking at a 32 inch 310 watt LED light bar for my 2010 Honda CRV. The light bar I am looking at is https://www.amazon.com/dp/B07MCNYXFT/ref=cm_sw_r_cp_apa_i_JpKPDbTR3J8R4. The wiring ...
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310 watt light bar 12 awg wire harness

I am currently looking at a 32 inch 310 watt LED light bar for my 2010 Honda CRV. The light bar I am looking at is https://www.amazon.com/dp/B07MCNYXFT/ref=cm_sw_r_cp_apa_i_JpKPDbTR3J8R4. The ...
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0 votes
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How do I connect an Antenna Cable to a Sat Nav's Power Cable?

I have just purchased a new Sat Nav Unit and would like to connect my original Radio Antenna to the Sat Nav Unit, so that I am able to pick up Radio Stations and control their output via the Sat Nav ...
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1 vote
1 answer
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2002 Silverado 4.3l wiring question, MAF sensor and water temp sensor throwing intermittent codes

My truck had been throwing intermittent MAF codes for a month, P0102 "low or no voltage." I only noticed due to the rough idle and "stumbling" on acceleration. I finally got around to giving the MAF a ...
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