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32 votes
6 answers
559k 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 ...
Brian Knoblauch's user avatar
10 votes
2 answers
1k 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 ...
user56reinstatemonica8's user avatar
9 votes
1 answer
3k views

Disconnected wires near battery in BMW e46

I noticed a disconnected wire dangling next to the battery in the trunk of my 2005 BMW 330ci. It was actually a red and blue wire that veered off from the thick red one in the middle of the image. ...
s g 's user avatar
  • 442
7 votes
3 answers
621 views

Wiring extra truck battery to power winch

2010 Silverado 1500 My Silverado has an empty spot under the hood for a second battery. I’m wondering if I could install a second battery and use it to power a winch that is mounted to the headache ...
User1974's user avatar
  • 981
4 votes
1 answer
828 views

Wiring Harness / Fuse Panel Repair

I have a 2006 Dodge Magnum and a friend of mine was changing the starter. Forgot to unhook the battery. And when the hot wire on starter grounded out it Melted the Negative battery cable until it ...
Big Al Ruby Newbie's user avatar
4 votes
1 answer
1k views

Suzuki Grand Vitara 2004 wiring

My dad and I just put in a new engine for my Suzuki Grand Vitara. We connected all the necessary wires and ready to go. When we tried to connect the battery the positive terminal started heating up ...
Jean Lubbe's user avatar
3 votes
1 answer
231 views

Quick-release for battery terminal loops (D18S/T3)

I have a D18S/T3 battery that I want to use to power the lights of an aluminum boat. I don't want to leave the battery in the boat when I'm not using it. I figure the elements would damage the ...
User1974's user avatar
  • 981
2 votes
1 answer
41 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 ...
KIRAN K J's user avatar
  • 241
2 votes
1 answer
76 views

1955 Chrysler Windsor no response when I turn the key

I have had this car for a while and have had it running for a while but suddenly it stopped working. When I turn the key there is absolutely no response; no lights no clicks, no starter activity. The ...
Terence Wilson's user avatar
2 votes
2 answers
5k views

Mercedes ML 430 will not start. No click, no electrical lights nothing.

After taking a nap in the parking lot at my job, the driver's seat (power seating) -- the passenger seat did work-- I had laid back could not be readjusted. After work I went home (3am closing shift). ...
Sam N's user avatar
  • 21
2 votes
0 answers
222 views

Fresh battery, no lights on 1979 Honda CB125 [closed]

I have a 1979 Honda CB125 that was running consistently about 2 years ago. It then sat for two years and the battery was corroded so I replaced it. I've made sure the battery is charged (I have a ...
Ellen's user avatar
  • 21
2 votes
0 answers
627 views

Nuts for 2008 VW Jetta SE 2.5L battery terminal bolts: 1/4" or M6? [closed]

I want to use an external charger to charge the battery in my US-market 2008 Jetta 2.5L SE with an OEM battery. I need to figure out which nuts to get to fit the existing battery terminal bolt, in ...
cnst's user avatar
  • 1,515
1 vote
1 answer
609 views

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 ...
extraordin's user avatar
1 vote
0 answers
194 views

I have problems with low beam and cruise control on my Holden Commodore VY

Headlights were working fine. Low beam is now too dim to see with ( Both sides) High beam still works well. Cruise Control was working well, but now works on and off, sometimes for a while, next time ...
Linda Watzinger's user avatar
1 vote
0 answers
131 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 ...
Jake Holtz's user avatar
0 votes
1 answer
109 views

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 ...
10101010's user avatar
  • 147
0 votes
2 answers
48 views

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
Rikki Taylor's user avatar
0 votes
0 answers
77 views

99 Dodge ram No power at all

I have a 1999 Dodge Ram 1500 with Magnum engine. I lost the key so a friend hotwired it at the steering column. It worked fine until at some point when starting it via wires he crossed 2 wires now ...
Cheryl Bayles's user avatar
0 votes
0 answers
64 views

12 V split charge system, full circuit specs

I'm working on a 12 V split charge system in a vehicle and I'm confused about which components to choose. Here's my current setup Alternator (BOSCH A0165) : 150 Amps Relay (NAGARES RDT/3-12) : 100 - ...
dtcs's user avatar
  • 1
0 votes
0 answers
64 views

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 ...
Sad Nissan Murano Owner's user avatar
-1 votes
2 answers
8k views

Why starter needs two positive connections

So from schematics or youtube it is clear that car electric starter is connected to battery positive terminal with two connections: one is always connected to battery (B wire) and one going through ...
user50640's user avatar