1999 dodge durango will turn over but not start after a friend put jumper cables on backwards.when i try to start vehicle security light blinks ,flashers and dashboard light blinks for approx a min but security light never goes off.none of the.gauges on dash board work.power lock switch on driver and passenger door only unlock/lock back gate.battery is good but after jumping it off when i remove cables battery drains down quickly seems like a short to the battery.interior lights,air conditioner both work radio comes on but no music plays

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    You need to check the open circuit voltage of the battery first. A "backwards jump" as you described it, may have done irreparable harm to your battery. I doubt there is more damage than that, but the very fact you needed a jump (good, bad, backwards or otherwise) makes me suspect you need a new battery. – SteveRacer Jul 29 '16 at 6:35
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    With the security light on, it sounds like the vehicle ignition is locked out. You may be able to do something with this by disconnecting the battery for 30 minutes to reset all of the electronics. Give it a whirl and see if it will reset. You very easily could have fried a vital electronic part. I've seen it happen before. One of the main things to look at after starting is the alternator. For the radio, check if there is an amplifier in the system, which may have had a fuse blown. Heck, first stop should be checking all of your fuses! Great place to start, anyway. – Pᴀᴜʟsᴛᴇʀ2 Jul 29 '16 at 14:40

Get your battery sorted first, if the battery dead (which is very possibly melted), when the battery is full or replaced, if it doesn't work, get OBD2 scanner to it or ask for a help in garage. Your ECU might be burned... :(

  • Shouldn't speculation be a comment – DJSpud Sep 28 '16 at 14:28

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