About the main electric systems of the car. Consider a different tag for radios and other such systems.

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1answer
266 views

Does anyone know of a commonly available DPDT or DPST relay? (For use as replacement starter relay)

I have a car (1971 Jaguar E-Type 6 cylinder) with a bad starter relay. The original relay is not available, and all of the specialty parts suppliers sell a generic replacement relay. I'd like to ...
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3answers
904 views

How do you test relays?

I have a Pontiac Grand Am. After getting a hose replaced, I noticed that my fans don't come on now. I checked the fuses and cooling fan #2's fuse is burnt out, which (I think) should be for AC only. ...
1
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1answer
494 views

Cruise Control and Brake Lights not Working

I recently fixed a problem where the cruise control and brake lights stopped working at the same time in my 2006 GMC Canyon. The question is not how to fix this, but how it broke to begin with. I ...
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2answers
1k views

Can an engine stop from a bad battery?

The car is a 2005 Toyota Corolla CE. Its engine is the 1ZZ-FE, a 1.8L straight four that runs on gas, not diesel. The alternator is stock, and tests out just fine on the multimeter in both voltage ...
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0answers
392 views

How do I fix an immobilizer problem on a 2006 Kia Sedona?

How do I fix a problem with my immobilizer? This is a follow up to this question: 2006 Kia Sedona intermittently not starting What parts (if any) do I need? What would be the best way to go about the ...
4
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1answer
201 views

What's the reason for a battery light coming on and becoming brighter as the engine revs higher?

The vehicle is a 1993 LandRover Discovery 3.5 V8. Today when I hopped in to drive home the battery light came on when I started up, and remained on. It gets brighter as the engine revs and just ...
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3answers
1k views

Alternative reverse light switch

I am about to take me ute to get a "safety" certificate so that I can get it registered (QLD, Australia) and I have one issue left that is still a possible problem. The switch that operates the ...
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2answers
648 views

What system should I inspect first for the following issues on a 2004 Chevy Aveo?

A 2004 Chevy aveo with around 78,000 miles has the following issues: The Daytime Running Light indicator (as well as the lights themselves) randomly turn on and off. This is a slow thing and has ...
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2answers
5k views

OBD-II reader/scan tool that can also diagnose air bag light

Is there an OBD-II reader/scan tool that can also diagnose air bag warning light? My 2004 Honda Element EX has a red air bag warning light that recently has turned on. The nearest Honda dealer wants ...
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2answers
90 views

Turn lights are blinking at a different rate

I am rewriring my car with new harness and I noticed something strange. My left turn lights blink faster than my right turn lights. They are both routed through the same relay and I don't think they ...
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4answers
5k views

What is the best overall ODB2 scan tool?

There are a number of different ODB2 scan tools out there, some PC based, some standalone units, some more for tuning and some more for diagnosing problems. What are the different features that these ...
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1answer
2k views

Using an iPod / iPhone in a 2005 BMW 525i Sedan

I just purchased a BMW 525i (2005 model, automatic) and was wondering if this model supports an adapter like later models for an auxiliary or iPod cable integration? I did some Googling and found some ...
3
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2answers
486 views

Does length of jumper cable matter while jumpstarting a motorcycle from car battery as a booster?

I recently left my Harley Davidson 883 Superlow in ignition on for 8 hours, headlight drained all the battery. This was my first time jumpstart experiment. Had following few questions, happy to be ...
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3answers
5k views

What are the tradeoffs for positive vs. negative ground?

I just got a classic Ford 8N tractor running again. Someone trying to be helpful flipped the battery around, connecting negative to ground. This made the engine crank backwards! So I had spark, ...
3
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1answer
520 views

Battery replacement on 2001 Chevy Venture

I have a 2001 Venture that needs a battery replacement. Will disconnecting the battery activate the Theftlock system in my stereo? My impression is that the VIN is stored in flash memory, so a ...
2
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1answer
216 views

Power Inverters as Emergency Generators?

After being hit by Hurricane Irene last week, I happened to loose power for literally one week so rather than rely completely on batteries and being a nomad, I used my Cobra 400 watt power inverter ...
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1answer
64 views

What is you recommendation for a car antenna?

I recently bought a used car and it did not come with an antenna. There is a cap where one should be and a wire runs up to it. personlly I would like a short one (6" or less). What antenna would you ...
3
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3answers
176 views

possible alternator-battery mismatch if I replace the existing battery with a much higher CCA one?

I have a 2000 Audi A6 Avant 2.5 diesel whose current Audi battery (approx. 650 CCA) is dying. Am looking at an Exide X-Tra Plus at 900 CCA to replace it. However, should I be concerned that the ...
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2answers
236 views

What functions & features should I look for when buying a multimeter?

Going to be used for car maintenance/restoration work and around the house repairs.
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2answers
56 views

Left blinker quirky when braking

This is a bit of a strange problem but the left turn signal on my '98 Saturn SW2 is acting a bit funny. When braking the blinker will either simply not work or work very slowly. When not braking it ...
2
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3answers
5k views

Can I charge a Car Battery with a Motorcycle charger?

Car battery to be charged is a DIN66 which I think is about 65ah. I have a Motorcycle charger which says it can be used on cars; it suits batteries from 4 ah to 40 ah. Does this mean that it can ...
3
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2answers
400 views

s60 won't start, no lights, nothing at all

I accidentally left my keys in ignition overnight - and now nothing. Have charged battery and tried spare key, but neither fixed the issue.
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1answer
811 views

reverse lights always on

I have an older 1993 Mitsubishi Triton ute. The issue is that the reverse lights are always on while the car is running regardless of gear position. The gearbox works, that is to say that the car ...
3
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1answer
349 views

2007 Nissan Maxima Windows and Sunroof are Unresponsive

All the windows will not go up or down including the sunroof. Everything else is working. The fuse under the hood looks ok. There no sign of it being bad. Can it still be the fuse and if not what else ...
1
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1answer
252 views

Concealing a radar detector [closed]

I've seen some guides online for hard-wiring a radar detector into the electrical system of the car via the moon-roof line or similar. But what about concealing the detector itself. I'd like to ...
2
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2answers
3k views

Radio Wiring diagrams and/or color codes?

I've got an older Nissan truck (1994) that did NOT come with a factory radio. A previous owner had an aftermarket style radio installed, and the installers used one of these universal radio ...
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2answers
132 views

Intermittent stall at idle

I have a 98 Saturn sw2 with a recent problem. Two times now it has stalled while idling and when it doesn't stall it floats near 500 rpms (Usually 750 - 950). The first time, it would start and just ...
4
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1answer
477 views

1997 Geo Metro dies after driving for a short time. What next in diagnosing culprit

Back Story: I recently took my Geo Metro on a road trip. 2700 miles of road trip. The first 800 mile nothing happened. Then going up a hill it died, dropped from 75 mph to 55 mph then the engine ...
7
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1answer
209 views

Finding And Fixing A Short

Make: Chevy Model: Cavalier Year: 1993 (old I know) Symptoms Turn signal no longer works. The lights do not come on, and there is no "ticking" sound. New Fuse for signal blows as soon as the car ...
3
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2answers
2k views

Should only the left “Rear Fog Light” actually light up in a pair?

On a 2003 Saab 9-5 Aero, only the left rear fog light lights up. The right side has a bulb but when I switch the bulbs, the left still is the only side that lights up. I thought it might be a wiring ...
5
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2answers
2k 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 ...
2
votes
2answers
244 views

Can I replace the glass mirror in my (wing) mirror?

A neighbour of mine hit my (wing) mirror with a sliotar and it's cracked/smashed. Can I replace just the glass (the actual mirror itself)? Preferably doing it myself. As oppposed to having to buy a ...
3
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1answer
214 views

Hour meter stopped turning

I have an hour meter for my engine in the middle of my tachometer. It has stopped incrementing when the engine is on. I pulled the tach (which works fine) and all of the four wires that attach to it ...
2
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1answer
118 views

What are the resistance values for a 1970s GM fuel level sender?

I'm looking for a chart that will tell me the resistance values for each fuel level. There are a few such charts like that for resistance readings on coolant temperature senders. Does anyone know of ...
2
votes
1answer
291 views

Daewoo Lanos SX from 2002 soemtimes does not detect coded key.

I have a 2002 Daewoo Lanos SX which uses coded key. From time to time the car will stop detecting the key and I get into a situation where I'm unable to start the vehicle. The problem usually lasts ...
2
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1answer
63 views

How will a hybrid electric vehicle electric drive perform in severe frost?

Every description of hybrid electric vehicles goes to lengths explaining how good it is that an electric motor can be used in cases where the internal combustion engine is not very efficient and thus ...
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1answer
4k views

Where is the Wiper Relay/Control Module located on a 1994-1998 Ford Mustang???

I am trying to repair my wipers, there is no voltage in the wires that connects to the wiper motor. I checked the fuses and current is passing through them, so they are ok. I think the Wiper Relay ...
3
votes
1answer
171 views

Can I decrease the sensitivity of my seat belt “person detector”?

Any time I put something - as light as 10 pounds in my passenger seat, my seat belt alarm goes off in my 2007 Pontiac Vibe. To avoid the VERY annoying beeping, I usually end up buckling up my ...
7
votes
4answers
2k views

How to assess battery charge level and alternator performance?

What diagnostics can be done to to assess battery charge level? I'm interested both in one-off tests like can be done in car service and also continuous monitoring during normal use. Car panels ...
4
votes
1answer
3k views

How should the lights for a trailer be hooked up?

I have a tent trailer and the lights don't work right. It has a 4 wire connector to my car but one of the wires on the trailer connector was worn out and probably not working. So I got a new 4 prong ...
0
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1answer
50 views

1994 Tracker Emergency Brake

I have a problem with the emergency light ((!)) staying on, just started 2 days ago when I went over a speed bump, Brake fluid is full, I topped it up a month ago, the gas task was close to empty so I ...
3
votes
2answers
320 views

Trailer wiring corrosion

Every couple of years I find that the trailer wiring connector (7 pin) on the back of my truck doesn't work properly, causing the brake or turn signals on the trailer to not function. This is caused ...
0
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0answers
171 views

How do you locate a battery drain? [duplicate]

Possible Duplicate: Battery drains by itself when vehicle is parked (parasitic draw) Something is leaching current from my battery. Leaving it parked for a few days results in the battery ...
4
votes
2answers
2k views

Possible short in reverse lights on 2003 Nissan Frontier Pickup Truck

When I engage reverse on the manual transmission of my 2003 Nissan Frontier pickup truck, the reverse lights tend to sporadically turn on and off. I'm trying to figure out what path to take to ...
2
votes
2answers
310 views

What's the correct fusing for a headlight relay?

Summary of the situation: I have a 1975 Ford truck that suffered from the "Ford flashing headlight problem". The factory wiring uses 18ga wires over a very long path and through an under-rated ...