Questions tagged [wiring]

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

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1answer
41 views

How to figure out wiring scheme of cars AC controls

I'm not sure if this is the right for for this, but my 2011 Nissan Maxima has it's AC controls in the same part as it's stereo controls (see here) and I would like to replace my stereo. This means I ...
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3answers
88 views

troubleshoot a shorted trailer wire

There is a short in the wiring on my trailer that keeps blowing fuses, so that tells me it's grounding somewhere. What are some ways I could troubleshoot to find where it's grounding at? I definitely ...
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1answer
329 views

Can I ground an amplifier on a bolt that touches the chassis or does my ground need to touch the chassis?

I currently have my amplifier grounded like this but I need to turn up the gain to the max to hear my subwoofer. Is this a good ground or does the ground connector ring actually need to touch the ...
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2answers
29 views

Can we connect mobile to reverse cam display output

My cars reverse camera's display break. I can see a mini USB cable was connected to the display. Can I connect my mobile phone to that output using mini USB female to micro USB male jack with any kind ...
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0answers
45 views

Mazda 3 Sedan 2010 - Replacing trunk light holder

As stated in the title I am trying to figure out a way to pull out the holder from the trunk of my 2010 Mazda 3 Sedan. Adding more to the situation, the holder has melted and is now moved a bit inside,...
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0answers
33 views

Open ground wire causing weird behaviour of combination meter

Few months ago, my combination meter suddenly start flicking then all the gauges stop working. After diagnosing it myself with multimeter and with the help of wiring diagram obtained from google ...
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2answers
772 views

How to handle connecting multiple ground wires?

I want to refurbish the rear light wiring of a campervan. The wiring is a mess with way too many connectors and no labeling, and has intermittent connection issues (lights not working). On one end, ...
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1answer
2k views

Something is causing my 12V ignition wire for the stereo not to function

I have 2002 ford focus and I installed a new stereo system it was working fine.... then I had to pull the stereo out again b/c I forgot to install Mic. and cig lighter.... after I hooked those things ...
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1answer
101 views

Where I do find a 12v accessory power in a 2008 Pontiac G5?

I'm trying to install a cruise control in my 2008 Pontiac G5. It's made by Rostra. It needs 12v accessory power. I think I need to go to the fuse box, but does anyone have any idea which wire to tap ...
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0answers
62 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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1answer
163 views

Can I bypass solenoid clutch switch by grounding the pin directly with a wire to the chassis/frame?

My solenoid switch has 4 pin for an Honda motorbike. One of the primary pin to be energized for the solenoid to click is the clutch switch. My question is: can I connect the pin with a wire that i'm ...
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3answers
2k views

When to use chassis and when to wire to battery neutral?

I'm thinking of adding a 4 AWG wire to the cabin of my wife's SUV from the battery so as to be able to use a 750 watt inverter to its max*. In researching this I came across people installing amps ...
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1answer
914 views

Electrical power shutting off while driving. 2002 Buick Rendezvous CXL

I've had this problem for about a week now. While driving the car radio, instrument cluster, A/C and lights shut off intermittently and I can hear clicking from relays in the fusebox. The engine runs ...
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1answer
72 views

Repair spark plug wires instead of replace?

Shakes and misfires on 2004 Honda odyssey: I've just replaced spark plugs, a few faulty coils (had oil in them) and the front-side o-ring and gaskets. I don't want to spend more money. All DIY. I had ...
2
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1answer
35 views

underseat lighting that goes on when door opens or with switch

I'm looking for a wiring diagram that will allow my under seat LED lights to turn on when the car door opens, or with a switch. I am planning on tapping into an existing light that goes on when the ...
2
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1answer
3k views

Testing a motorcycle ignition coil and spark plug

Here is an image for reference: I am attempting to test this ignition coil and spark plug. How do I go about connecting this to its corresponding 6v battery to get it to fire. As well I will be ...
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0answers
102 views

Switched fuse always on

Wondering if someone can help. I am putting in a GPS unit in my friends truck. Not the first time I've done this in his truck. Last time we ran the red ignition wire to his fuse box using the supplied ...
2
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1answer
28 views

Do i need a separate powerswitch for amplifier besides remote

I have a Ford Fiesta 2010 model. Its fitted with JBL GT5-A402 amplifier with 240 watt. It is connected to a Pioneer head unit. Rem wire is working fine. Amplifier is powered directly by the battery ...
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0answers
230 views

2004 suzuki sv650s fuel pump does not prime or start

I've just purchased this bike as a non runner due to the alarm ( datatool system 3) I bypassed the alarm and it run like a dream. I then proceeded to remove the ararm by following all the wires and ...
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1answer
47 views

Speaker bass buzz

I am having some major troubles. I installed a custom sound system into a C5 Corvette. The deck is a KVT-7012BT Kenwood ( I used speaker wire to ground the RCAs). The speakers are Pioneers; two ...
2
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1answer
81 views

Battery Drain Immediatly

So, I am currently putting in a finalized sound system in a 1998 C5 corvette. I finally put the whole thing together( 4 speakers, hooked to an Alpine amp with RCAs. And a amp included sub box, the ...
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1answer
46 views

What extra wiring connectors are in the back? 2006 Highlander Hybrid

Today I installed a towing cable harness in my 2006 Toyota Highlander Hybrid and I had a bit of difficulty at first because the correct connector was somewhat hidden (wrapped up in protective material)...
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1answer
125 views

What wires to use in wiring loom for 1986 CG125

I have an old 1986 CG125 6V motorcycle that needs patches/extensions to the current wiring loom. What gauge wires do I need to use (amps and thickness)? I have the Haynes Manual but cannot find the ...
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0answers
76 views

2018 Dodge Journey Alarm System

I recently bought a new vehicle and had an audio shop put an alarm system and a remote start in the vehicle. Everything seems to be working just fine, except for an annoyance with the remote start ...
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3answers
3k views

Aftermarket stereo with alternator whine

I replaced the OEM stereo unit in my 2001 Toyota Celica with an aftermarket one to have bluetooth, USB connectivity, etc. No new wires were added, I just used the original wiring with an adaptor like ...
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1answer
27 views

How to troubleshoot a specific trailer brake light issue

Friend of mine is having trouble with her trailer's brake lights lighting up only on one side: In the above photo, the key is in the ignition, and the vehicle is in park. Not sure, this is an ...
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4answers
1k views

Does Electrical Corrosion Increase During Seasonal Change?

There seems to be an excessive number of Questions being posted where the issue seems to point to electrical issues due to corrosion. I am wondering if this is perhaps seasonally related? The influx ...
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0answers
394 views

Alternator whine with perfectly run wires

I know a fair bit about car audio, and so does my friends. We've installed probably 10-20 big time audio upgrades, meaning new speakers all around and medium to insane subwoofers in the trunk. However,...
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0answers
31 views

Is it safe to attach a 8.5Amps device to a fuse tap?

Would it be safe to attach a device that pulls max 8.5A according to the manufacterer to a fuse tap? I'm scared that the wire will overload. I have my eyes on a 10A fuse for interior lights to tap ...
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1answer
436 views

Can I use a fuse tap with an external fuse on the power cable?

I have a power cable for an active underseat subwoofer that I want to attach to my fusebox (corsa d 2008). My plan is to take out a non-important 15A fuse, put it on the fuse tap in the bottom slot ...
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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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0answers
60 views

03 BMW 540I M package Charging System issue

I purchased this vehicle in October 17, 90 thousand original miles 3 different owners according to carfax. Car was in perfect condition, I personally kept in garage and rarely got out for the first ...
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1answer
233 views

Ground wires for a 1992 Ford Ranger with a 2.3 engine

I'm changing out my pos and neg cables. The neg has one ground wire with two eyelets where the bolts go through, one is hooked to the frame but the other I don't know where it goes, can someone help ...
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2answers
3k views

Trouble rewiring O2 sensor harness after dogs ate it

This is a 2005 GMC Yukon 4x4 4.8 L. Ok, dogs actually ate my harness going to Bank 2 Sensor 1 O2 sensor. The connector from the body side of the wiring is completely gone. I found a connector I can ...
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1answer
64 views

need a diode to put in when installing new wiring

need a diode for a Harley three wheel police bike. don't know any specs but is a 12 volt alternator system. diode goes between gen. and oil press. lights and the regulator. Harley no. 74559-65 is not ...
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2answers
989 views

Truck Cap Lighting and Wiring - Can I splice two ground wires together, connect to one ground?

I have a new truck bed cap. I need to wire the cap's dome light and third brake light. As such, the cap has four wires (supply to dome, ground from dome, supply to brake light, ground from brake light)...
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0answers
38 views

Combine two circuits in parallel?

From a purely electrical perspective, I'm pretty sure this will work fine and won't cause any issues. That being said, I wanted to get some more experienced thought. In my vehicle, I have a 125A ...
16
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4answers
2k views

40amp protection on 25amp rated wiring?

Q - why is the circuit described below protected with a 40amp fuse when the cable to the motor is 2mm² (I cut a bit of cable out and measured strand thickness and quantity, 37 * .26mm = 1.98mm²) and ...
2
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1answer
325 views

2004 renault megane grand scenic ii

I am currently having an issue with my car when I try to start I have the follow messages low oil pressure, low battery, parking brake fault I have inspected all wiring fuses in engine bay all fine ...
5
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1answer
1k views

How to wire a glow plug?

I basically am looking for terminals where I am supposed to connect the required VCC and GND on this Glow Plug When I check the continuity using the multimeter,it comes out as a single unit. Does that ...
4
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1answer
212 views

What type of crimping pliers do I need for these connectors

I have to run some cables in the bumper and I want to use waterproof connectors housing. The problem is that I don't have any crimping pliers and I don't know what type should I buy for this type of ...
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2answers
2k views

Why are ground straps bare, and can I shield them?

So I have to replace a ground strap on my wife's car, which is a bare, braided copper wire that's tinned and solder blocked in the ends. Because this particular ground strap is on the bottom of the ...
3
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1answer
238 views

Just bought a 2001 Jetta, the radio wiring is super screwed up… no clue what to do

It has a wiring harness in there but it’s not right, only one speaker works and there are several wires not attached to anything. And what is the blue and green connection? I’ve been trying to figure ...
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0answers
195 views

Nissan micra 1.1 engine management light on, common fault?

Is this a common fault on the micra? Will the light go out if battery is disconnected, as some people claim? Obviously it would come back if there is an actual fault.
5
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0answers
5k views

Non-zero voltage on camshaft position sensor power wire without main relay. Is there short somewhere?

I have been troubleshooting Camshaft Position Sensor no-start issue in this thread for my 2007 Chevrolet Aveo. Long story short - in one of the answers it was suspected that camshaft position sensor ...
19
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3answers
15k views

Can I connect wires by just twisting them together and insulating with tape?

My cousin replaced a instrument panel cluster of a car with another one that is very similar. He did it by cutting the original junction/wires block that come out of the instrument panel and attached ...
5
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1answer
96 views

Is it appropriate/safe to butt splice old PVC to thin wall?

I'm in the middle of restoring a 1991 TVR S3, and need to replace the headlights. The old PVC wire needs to be stripped quite far back, and because I would prefer to use modern connectors (the ...
2
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1answer
102 views

Car Radio Installation issues

I am having a very weird situation with my newly installed Pumpkin Auto radio. I recently bought the Pumpkin Auto universal radio and I am unable to get it to work on a Toyota Starlet Carat, model 97....
2
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1answer
221 views

Toyota Navigation System Connector doesn't fit Pioneer receiver

I'm trying to replace my car stereo in my 2006 Toyota Camry XLE with navigation system. I had the default navigation system Denso DW468100-0150 and wanted CarPlay and Bluetooth, so I bought the ...
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0answers
550 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.. ...