There is a really complete Astro Chart guide for your car in the downloads section. Here is a link :
https://www.the12volt.com/installbay/file.asp?ID=717Most all of the wires needed can be found at the BCM on the passenger side of the center floor console.
H1/1: (-)Factory alarm disarm - N/A
H1/2: (-)Factory rearm - N/A
H1/3: (+)Ignition out (to alarm) - N/A
H1/4: (-)Activation Input - N/A
H1/5: (-)Ground when locked - N/A
H1/6: (-)Horn Output - Tan At BCM J2 Connector pin 14
H1/7: (-)Trunk Release Output - Tan At BCM J2 Connector pin 10
H1/8: Ground - To common ground
H1/9: (+/-) Light Flash - Set to (-) BROWN / White At BCM J2 Connector pin 5
4-pin satellite harness
1: (-)Status Output - Tp PKUMUX Blue/White
2: (-) Accessory Output - N/A
3: (-) Starter Output - N/A
4: (-) Ignition Output - N/A
Heavy gauge relay wiring
1: (-) (+) (30A) High current 12V Input RED / Black At BCM J3 Connector pin D1
2: (-) Output to second ignition/Accessory - N/A
3: (-) (+) (30A) High current 12V Input RED / Black At BCM J3 Connector pin D1
4: (-) Output to Accessory Circuit Small Brown At BCM J4 Gray Connector (Behind fuse box) pin C8
5: (-) Output to starter circuit PKUMUX Violet
6: (-) Output to primary ignition circuit Small Yellow At BCM J4 Gray Connector (Behind fuse box) pin D3 and
to PKUMUX Pink
Door lock harness
1: (-) Unlock output - inline 1.5k Ohm Resistor White At BCM J1 Connector pin 6 * might need a relay
2: N/A
3: (-) Lock output - White At BCM J1 Connector pin 7
Remote start harness (H2)
H2/1: (-) Neutral safety switch input - To chassis ground ( auto trans only )
H2/2: Tachometer wire - BROWN / White (2) At Ignition Coil
H2/3: (+) Brake switch shutdown - Lt.Blue At BCM J2 Connector pin 54
H2/4: (-) Hood pin switch - to kit supplied hood pin switch
H2/5 (-) 200ma 2nd status/rear defogger output - Lt.Blue At BCM J2 Connector Pin 68 ( Set 4103 to Pulse, Menu 2, Feature 8, Opt 3 )
PKUMUX
Blue/White to 4105 Blue (-) Status Output
Pink to 4105 thick Pink ( which also goes to Cobalt Yellow at BCM )
Violet to 4105 thick Violet
Light Green to Cobalt 5V Ref WHITE/ Black @ BCM J2 Pin 62
WHITE/ Black to Cobalt Data Input White @ BCM J2 Pin 56
WHITE/ Red to Cobalt Data Output White @ BCM J2 Pin 56
Red to 4105 either thick Red
Black to 4105 Black H1/8
Soldering is fun!