Hi, No big deal....I installed a VDO Dayton MS4200 Navigation System (I am an electrical engineer). The crysler schemattics from Tech Authority are labeled wrong. The fronts are driven by speaker-level outputs (NOT preamp) from stock Becker, so you just wire fronts-to-fronts. The rears are jumpered to the fronts in the cable harness that goes from radio to amplifier - there are splices about mid-cable beneath the dash under passenger footwell. The rear channel from the amps are labeled in the schematics as "power" and "twisted pair speaker leads" - NOT! These are dual voice coil subwoofers, and I highly recommend just leaving stock amp in there. I took the time to "unsplice" the fronts from rears on amp inputs, so the front fader is my fronts and the rear fader is my subwoofer, which improved bass response. But, if you just wanna' new radio, it is OK to just connect speaker leads from front channels of new radio direct to the existing left/right leads on the stock connector and go to factory amp. If someone needs the actual, Corrected version of the wiring diagram, I can draw it for them, just message me. PS, to all those previous with some knowledge of the wiring, the Infinity amp is designed around the Beckers high-level outputs (read speaker-level) - using stock preamps in the 0-5vdc range will not drive the input properly on the amp....PPS, the VDO Dayton unit looks great, better than factory, is way more usefull, and I installed CD-Changer in "trunk" in the foamed area by building in brackets. Also, I mounted 250W Sony amp in right rear footwell, driving some 4" component pioneers (woofer/twweter)I built into upper hatch area in rear. Adds a nice fill sound to back instead of the typical german "front sound stage" that the standard Infinity system gives......good luck!....chris