Corsa b battery going flat after fitting stereo!!!

[tomc20xe]

Hi there need some help!! i have just fitted a ripspeed dv710 dvd player in my car and since then every morning the battery has been completely flat!! wont even try and turn over, there is a brand new battery on the car only a month old so cant see it being that, and i also did buy the proper wiring harness to connect the stereo to the car!! anyone have a clue to what it could be would be a great help!! cheers

[Matt2345]

It may just be a coincidence that this has happened at the time of fitting the stereo, If you really want to be sure, get a multimeter get the car running and check to see that the battery is charging, IE your alternator is working and hasn't just packed up,

Even though it is a standard fitment block, I have known the switched and permant lives to be the wrong way round on certain models, Just the stereo retain is memory settings? If not they are reversed and that could be the cause.

The other thing is are you using the stereo when the engine is running? It may drain the battery quickly if you are using it when its not running.

[Nemesis]

Can it be switched on whilst the ignition is off? If so it's wired up to a permanent live, swap this over to an ignition live and you'll be okay.

Should be a case of moving a headunit wire from the red to the yellow on the harness (some like Alpine already have a crimp terminal to allow you to do this easily)

[MSG]

For a battery to go down in just an overnight period, its an indication of a fairly heavy drain, so if I were you I would check that when everything is off, there should be no more than about 100mA drain on your battery, this 100mA (tenth of an Amp) is usually for some things that draw this current to supply power to alarm and security circuits, clock etc. It should be well under this figure, if assuming your battery is at least 45AH then for it to go down to less than 10v then you have a frightening amount of drain,the cause could be that in your wiring your stereo, its been wired incorrectly, or you have another problem caused by your wiring where something went wrong when for example you may have reversed a connection and that blew up someting such that it is now drawing too much current. Does happen and can happen. connecting something wrong way.

[MR_TOAD]

Will be radio wired incorrectly check ignition switched supply and pos feed are correct as advised what year is car as ignition may not be present in radio plug just 2 constant lives
Ian

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[Dom]

or take the radio out and see if the problem persists

[wkdkris]

or take the radio out and see if the problem persists

Yep! It would be the first thing i'd try..... If your not technical enough to meassure drainage with a multi-metre try removing the radio/cutting its power supply off.

If you can use a multi meter, still try it. As said, it must be quite a heavy current to completly drain it over night. Get ur meter reading and undo the radio, if its causing it ul see a huge drop in current. If not, start pulling fuses 1 by 1 untill you find the problem.

[tomc20xe]

fixed now, wires going to the mbe engine management system were damaged, must of been draining it somehow sorted now anyways cheers for the suggestions