Can't help with the wiring diagram, but my dealer just quoted me $600.00CDN installed for the factory Mopar remote start with the newest upgrades. I too am familiar with installing aftermarket remote starts, but I don't think it's worth the hassle figuring out everything in the car that isn't going to work right when you start splicing into the comp wires. Because this car relys so much on computer control, their are numerous factory installed programs and anti theft components that will cause irratic behavior when they are messed with. My feeling is that buying a good aftermarket remote start is gonna cost you between $250.00-$400.00, plus the 2-3 hours of your time(assuming no problems), and you up close to what the dealer wants for a Mopar approved product with warranty & guarantee. Just my 2 cents.......
06 BLACK CHARGER R/T. Charger MODS to date: MOPAR C.A.I., GSM MOD, AUTO HEADLIGHT SWITCH, REAR SPOILER, SRT GRILLE W/R/T BADGE, BORLA 125's, R/T VISOR GRAPHICS, CUSTOM SEAT COVERS & "HEMI" SHIFTER KNOB, HOOD STRUTS, MOPAR NAVUS GPS, HOOD SCOOP(cosmetic), S/C TUNER, SILVER DEALS REPLACED WITH ALL FLAT BLACK(hood & side).