lights killing radio???

Question

ok this morning when i turned my headlights on i noticed that my radio shut off and then turned on again. also when my light are on and I use my signal it kills my stereo and then it turns on again, but i use my signal with lights off this does not happen. what could this be ??????? also if my head lights are on are on the emergency lights don't kill my radio and the signals do ????????????? thank you all. somebody had this problem few days go...I searched and didn't find anything? so thank for helping me.

Answer 1

Electricity takes the easiest path to ground. Your radio has a light in it that comes on when you turn the the headlights on, so your radio is wired into the headlamp switch of the car.

My guess is that there is a bad ground on your radio chassis so the radio is going to ground through the headlamp switch and the headlight circuits. When the headlamps are turned on so that power flows through the headlamp switch it can't ground the radio so the radio stops until the electrical flow for the radio can go to the ground for the radio that was put inwith the radio and is a much poorer ground. When the lights are turned off then the radio seeks a ground through the headlamp switch again. same with the turn signals as they usually share a common switch with the headlamps. The emergency flashers are on a different circuit and have a different switch, so nothing happens when they are put on.

You need to have the radio ground repaired. In all probability the ground for the radio is loose, corroded or both. the ground is typically a black wire that is screwed into a metal part of the car chassis. The factory grounds are shown in the service manuals and wiring diagrams. If it is not a factory radio, then whoever put it in may have grounded the radio anywhere.

hope that helps

Answer 2

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Answer 3

I have a similar problem that just started - when I tap the brakes or turn on my turn signal, sometimes my CD player goes off. I wonder if this is an electrical fault, but one answer to your question makes me wonder if I should check my car's battery.

Answer 4

You might want to check ur battery. it sounds like ur lights are sucking power when the radio is on. how new is the battery u might need a new one. or have someone check out how the radio is wired. is it the actual radio that came in the car or aftermarket

Answer 5

it's the wiring of your stereo..whoever install it didn't do a good job..if it's the original maybe there is something wrong with the wires.