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I accidentally connected jumper cable backward when jumping my car, now the amplifier won't turn on. I think the fuse near the battery is OK because it seems to send power to my capacitor. What do you think?

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Check the fuse on the amp.

Posted on Aug 20, 2008


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My 97 Sonoma starts, doesn't start. It jumps easily. When I turn the key, I get nothing - no dashboard lights, no engine crank.

Do the dash lights come on with the jumper cables? Did someone connect the jumper cables backwards? Sounds like a main fuse blown. Check the plastic fuse box under the hood near the battery on top of the inner fender. All power to the truck begins there. Check for large fuses 30 amp to 60amp. check everything in that box, relays too.

Jun 14, 2017 | Cars & Trucks

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Car running fine cut it off now want start make noises like battey is low but wont jump start

That's usually a corroded, burnt, crusty or loose battery terminal (connector), post, nut or wire. A seasoned mechanic knows how to check, tighten and clean all battery connection points and that lousy cheap cables can prevent a successful jump. You can check your battery in another car to see if it has the cold cranking amps necessary. A starter and a battery usually will go intermittent before going totally bad. it is dangerous around explosive fumes, such as a charging battery or fuel, but pass-touching or bumping the pos/neg jumper cables together for a quick test of battery and/or cable power has been the old way of testing for good power at the cables and battery. A good connection will spark very bright and loud - experience a good battery a few times and it is easily learned. Jumping from another battery without running the jumper engine will take a much stronger jump battery, even with good cables - starting the jumper car and letting it charge the dead battery for 3 or 4 minutes is usually enough for a good battery to come back enough to allow start. (Leave the cables on for the start attempt). Don't accidentally touch the cables together while still connected to either battery, they can fuse/weld and burn. Battery acid is toxic, smelly, explosive and will eat holes in your clothes. Don't drop a battery. Don't overcharge a battery, if it smells it is dangerous. I always blow away fumes as I am connecting battery cables. I turn off everything in the car when connecting them.

Jun 28, 2014 | 2003 Chevrolet Impala

2 Answers

Saturn jumper cables hooked up backwards

Try charging the battery more. Even though your lights may come one, starting a vehicle requires massive amounts of amperage from the batter. It's possible that your jumper cables aren't a thick enough guage to supply enough power as well. Sometimes the vehicle you're jumping from might not have enough power to support your vehicle's starting power requirements.

Apr 15, 2014 | 2001 Saturn SL

1 Answer

2003 Elantra-Car ran fine until my son's door was not complelety shut and battery died, jumped car, but once the jumper cables were removed the car dies. Thinking it was an electrical issue, check

some alternators need battery voltage to stay running and after killing a battery if may not recover and you will need to replace it then i would check the fuses its posible that when first jumped the cable where on backwards

Aug 07, 2012 | Hyundai Motor 2003 Elantra

1 Answer

I accidentally hooked up jumper cables backwards when I was trying to jump start my 97 Ford Escort. Needless to say, it was not good. It started to spark and caught on fire. I was eventually able to get it...

I bet you saw some dramatic sparks when you hooked the jumpers up backwards!
The good news is that if your ignition switch was turned to the "off" position when this happened, the fix may be simpler and cheaper than you think. This car has one or more "fusible links" in its primary wiring. They may look like a thick piece of wire, but they act as super-fuses in the the case of large-scale power shorts and the like. Fusible links are typically in-line, so you won't see them in either your under-hood or under-dash fuse boxes. If you're lucky, you blew a fusible link right off the bat, saving the rest of your electrical system from serious harm.
If your ignition was turned to the "on" position when the battery was hooked up backwards, you have a more serious risk that you damaged your on-board computer. However, even if your computer were fried, your dome light, your hazard blinkers, and probably your headlights and turn signals (different circuit than the hazard lights, believe it or not, even though it's to the same bulbs) would continue to operate.
I'm going to recommend that you should check for one or more blown fusible links. Good luck!

May 09, 2011 | Ford Escort Cars & Trucks

1 Answer

In my 1993 chevy Kblazer my lights were left onand the battery died, when it got jumped i noticed the heat wouldnt cut off and there is no display, you can change temp, power, or anything??

Sometimes when a battery gets jumped there can be a voltage spike that affects electronic displays and functions. I would start by simply unhooking the negative battery cable for about a minute then reconnecting it and checking to see if the functions came back to life. If not, then check to make sure a fuse or fuses weren't blown somehow. Accidentally hooking up the jumper cables backwards, even for an instant, can cause damage to electronic controllers so that is also a possibility. Hope this helps and good luck!

Apr 18, 2011 | Chevrolet Blazer Cars & Trucks

2 Answers

No electrical power after replacing battery

Well, your initial problem sounds like a bad starter motor and now somehow there is another problem.
First, make sure the battery shows 12v with a volt meter. If its ok thenit may be that you accidentally hooked the battery up backwards...even for a second, it would have blown out a main fuse. Notice any sparks when you installed the battery? Or, did you try to jump it with another car and put the cables on wrong? If no too all this the check the smaller wires on the positive battery end to make sure none broke.
The main fuses are located in the relay/fuse box near the battery.
Hope this helps.

May 18, 2009 | 1995 Toyota Camry

1 Answer

Jumped dead battery; radio won't work

Sounds like they connected the cables backwards,there maybe a direct fuse on the back of the stereo that got burnt up.If there's not a fuse on the stereo than its probably damaged beyond repair.

Apr 10, 2009 | 2004 Ford F150

2 Answers

Car wont turn over, no radio, nothing

try the battery or the alternator

Jan 18, 2009 | 1998 Mazda Millenia

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