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Questions tagged [wiring]

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

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14
votes
1answer
73k views

Do I have to rely on wire color to correctly wire up an O2 sensor?

It seems that everyone and their grandmother has a different color-code convention for 4-wire O2 sensors, which complicates matters when one is trying to wire up a replacement "universal" O2 sensor. ...
30
votes
6answers
459k views

What causes battery terminal corrosion?

I put a new battery in my car about 8 months ago. After a problem starting a couple days ago, I found that there was massive corrosion under the battery terminals, so I cleaned them out and ...
3
votes
2answers
794 views

1987 Yamaha FZ700 headlights not working

I recently bought a 1987 Yamaha fz700, and the owner said the headlights didn't work, and I can't figure out what's wrong. We checked some of the wiring out, and the bulb connectors have no power ...
1
vote
1answer
33 views

Spikes while observing my obd2 scan tool

I have a 2005 chevy avalanche 1500 4wd automatic. I bought this last summer and ever since I got it, it has had problems one after the other. I recently bought a OBD2 scan tool and started observing ...
3
votes
3answers
39k views

Ford Fusion 2014 Wiring Diagram

I just picked up a new 2014 Ford Fusion and am planning on modifying the factory audio equipment. I've been searching around on some websites (The 12 Volt and various forums) and can't seem to find a ...
19
votes
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 ...
10
votes
2answers
353 views

Are there downsides to making an accessory socket always live, if accessories are removed when not in use?

In some cars, the power line from the battery to the accessory outlet (aka cigarette lighter socket) is always live. In others, it's off until ignition. It seems pretty much random which cars are ...
7
votes
2answers
13k views

Manual horn switch

what are the pitfalls or things to look out for when manually wiring a switch from the battery to the horn? Some background: I just moved to texas where they require vehicle inspections. My horn ...
4
votes
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 ...
4
votes
1answer
3k views

96 Impreza ECU Pinout

I'm still working on getting this EG33 into a 96 Impreza. I have received some wiring harness diagrams, but am unable to match them to the ECU which is in the car. I'm wondering if what I have are the ...
2
votes
2answers
23k views

Amp Install Question. Splice in pre or post factory amp?

I am planning on installing an amplifier in my 2008 Mustang and hoping to keep the factory head unit for now. My amplifier supports high level input through the RCAs. My question is should I splice/...
0
votes
1answer
26 views

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 ...