Hi everybody, I tried asking somebody to check the engine light on my car, they accidentally jumped the wrong cable which seems to have stopped my sony car stereo from working now. I checked the radio fuse and fuse behind the stereo and they all look fine. I am still able to eject and insert a CD into the system so that means that power is getting to it right? Is there a reason why the head unit doesn't come on?also Is it possible to fry your cars wiring with this mistake? But isn't that what the fuses are for? Is it just my head unit?thanks in advance!
No, fuses do not protect against reversed polarity. They are designed to protect from shorted electrical supply wiring and overloads (excessive current). Reversing the DC polarity to many devices will spell sudden death. Depending on how long the condition existed, there could have been a really huge buildup of heat which has damaged power supply components. One reason that reverse polarity is used with DC welding equipment is that normal polarity puts more heat into the workpiece, whereas reversed polarity puts the heat into the welding electrode.
If this is a manufacturing facility stereo on a overdue mannequin vehicle that you simply purchased new, then there's a well risk that your trader gave you somewhat card that has a quantity on it. Sometimes they placed this within the packet that you simply walked out of the dealership with, and mostly they only placed it on your glove field. If you cannot discover this quantity, then there's a risk that the dealership can reset it for youfor a rate mostly. The simplest difficulty I see is if you have no energy in any respect to the stereo (clock is not on, no safeguard caution at the show, and many others.) then they'll have blown a fuse on your fuse pannel whilst the alternator used to be hooked up. Even worse, if the fuse the radio is connected to didn't blow whilst there used to be a surge find it irresistible used to be meant to, then your radio is also burned up. Either approach, it seems like you want legit support. Stop via your regional stereo save, or dealershipwhichever is extra handy. It does not price something to invite them a query. Good success.
