AM Radio Reception (Help)

come to texas he is on about 20 am stations here !

 

Just a thought, is the Radio wired in to the electrics operating the brake lights?

 

It is designed to ground itself through mounting, however with the increased use of composites and alloy's to save weight/cost, the "quality" of the ground goes down. Under ideal conditions the radio ground should ground the ant. through the coax, but obviously that's not working, if you can get to the base of the antennae or the back of the radio a good ground wire can be attached at either end of the coax should do it. But that is going to be a pain. As far as stereo, the removal goes should be pretty easy, but if you mess with it, you will void the warranty(2014) I would take it to a dealer 1st. I guessing an aftermarket metal antennae is going to be the best solution, there aren't many of us left that still regularly listen to AM anymore, FM and satellite ant. are less sensitive to poor ground. The new composite/hidden antennae work good for satellite and fair at best for FM, but for AM you need a good old fashioned metal mast antennae.(the taller the better).

 

I've had this issue before, it is the antenna having a poor ground.

If the truck is under warranty, have a dealer fix the problem, replace the antenna and see what happens.

 

The radio may be hooked up to the body computer, which may also take the signal from the brake switch and transmit it to the chassis computer (it is like that on a couple cars) but I doubt it that matters because it seems that there is a flouting ground for the antenna on these radios, more or less isolated and when the connection is made to the brakes the length of wire to the light bulbs acts as an antenna so don't ask me why, I don't know but when I had the problem, I unhooked the rear light harness from the truck and it improved the reception just ever so slightly, when it was hooked back up, it came through loud when the the brakes were applied, Once I replaced the antenna, all of it stopped.