Mercedes c280 -- Did my amp (or me) screw up the electrical system???

Question

Mercedes c280 -- I was trying to connect my already installed amp to my interior speakers. I made a few wiring mistked during the process. I had the car turned on atthe time and when I did something wrong the car will rev w/ black smoke. Since then, my A/c and wiper doesnt want to work. The fuses are good, and power is running to the A/c and wiper. I have even removed the amp and it still doesnt work. Have I done something to the electrical system of the car. the first couple of days, the wiper and a/c will work when it wants to, now the wiper doesnt and the a/c blows extremely low. Thanks.

Answer 1

As a general rule you don't wire up an amp while it’s turned on, but anyway if the fuses are good then most probably what you have done is connected the speaker output from the amp to part of the cars electronics, basically meaning you have force fed the amps power down into the cars electronics the wrong way, which is why the car engine acted abnormally and these problems have shown up. It sounds to me you like you have damaged the engine management, climate control, wiper and most likely some others circuits that haven’t shown up yet. The best thing to do is take it to the Mercedes dealership to have it looked at.