AM/FM Radio with AUX or USB and speakers

Factory radio is easy to add aux input, solder the two wires to the outer two connections of the volume control, and turn the bandswitch to a mid-point where neither AM or FM are selected.
As a bonus, you can use the same plug to RECORD from the radio, if you wish.
I did this to every Mopar factory radio to use my own audio source.

I've got some questions for the people at retrosound, I suspect they do NOT have a tuned AM preamplifier sections like factory radios. If AM radio sensitivity and selectivity is important where you live, make sure any replacement radio does have a TUNED pre-amplifier for the AM, or you will wonder why the radio seems deaf.