When I step on the brake, turn on the headlights or 4 way flashers my radio goes off line for a few seconds then comes back on. This just started. For a little while now when you step on the brakes at night the head lights would dim for a split second then be ok. I noticed once while turning the lights on and off trying to trouble shoot this that the speedo gage dropped way off then came back. It has to all be electrically related some how. Any body have any suggestions, hints solutions????

 

sounds like a bad body ground, i would look at your ground from your battery, to the transmission, and also I would have your battery and altenater checked. More then likey its your ground or altenater. hope this helps you some good luck.