It is very easy to add a simple audio cable directly to the volume or tone control to become an auxiliary input for whatever alternative source is desired.
If the original radio is AM/FM, you then set the selector to a point midway where neither is selected, and plug in your phone or mp3 player.
If originally AM only, I add a physical microswitch at one end of tuner travel to disconnect the receiver portion.
You're still going to be mono only, and have whatever power level was original.
Adding an amp is something anyone can do.
I have used mine for both playing through the radio, and for recording from the radio.
It's also easy at that point to remove a high frequency limiting capacitor to have even better hi-end response than original.
They all have them, and this is where it becomes possible to have the AM fidelity equal to the FM, if the station itself has not limited the upper audio.
Quite a few stations do not if they olay music.
I'm stopping short of offering this service at the present because I'm in the middle of tearing up the last 27 years of my life and moving back to my childhood city, changing jobs, etc.
But come autumn, I may begin.
When I am eventually forced into a newer car, I absolutely will be hiding a 1960s Mopar AM radio somewhere in the car so I can have the AM performance I require.
I have no beef with the FM part of these conversions, I think it's great for the FM, or the ability to play mp3s.
