RBK Radio Mod

The purpose of this circuit is to modify the audio signal from the AUX modification to allow it to play at similar volume levels to the FM radio. The signal needs to be shifted up roughly 1.7 VDC and the amplitude of the signal needs to be doubled. This circuit in and of itself is NOT the AUX modificatio to the RBK radio found in older Dodge vehicles, but is an addition to the existing modification. The original modification can be found at https://imgur.com/a/nL7ow. This modification will exchange the switching AUX port for a DPDT switch to select FM or AUX.