last night in the dark my battery went flat and i used a jump pack to start it but my mate put the positive to the negative and now my starter motor starts as soon as ignition is on and the alarm has turned dodgy!!!wot could of happened to my car??cheers fellas
your mate has knacked the car, I'm surprsied the battery still works. It sounds possible the diodes at the back of the alt are now gone s/c or o/c and a weird current path has been created. Relays are tolrant to reverse polarity, silicon items are not (depending on type).
re connected the battery today and everything seems to be ok.every thing is working except the alarm.took out for a drive and there was nothing wrong or not workin.could it of just blown the alarm up??cheers