Here is what your wiring should look like :
Avital 4113
H1/1 LIGHT GREEN/ BLACK FACTORY ALARM DISARM Not Used
H1/2 GREEN / WHITE FACTORY REARM Not Used
H1/3 YELLOW (+) IGNITION OUT (TO ALARM) Not Used
H1/4 WHITE/ BLUE (-) ACTIVATION INPUT Not Used
H1/5 ORANGE (-) GROUND WHEN LOCKED Not Used
H1/6 BROWN (-) HORN OUTPUT tan (-) @ BCM under driver dash, brown plug, pin 18
H1/7 RED / WHITE (-) TRUNK RELEASE OUTPUT Not Used
H1/8 BLACK GROUND Chassis Ground
H1/9 WHITE (+/-) LIGHT FLASH *** Set to (-) BROWN / white (-) @ BCM under driver dash, white plug, pin 8
H2/1 BLACK/ WHITE (-) NEUTRAL SAFETY SWITCH INPUT Chassis Ground
H2/2 VIOLET/WHITE TACHOMETER INPUT WIRE DLPK Violet/White
H2/3 BROWN (+) BRAKE SWITCH SHUTDOWN WIRE lt. blue (+) BCM under driver dash, brown plug, pin 5
H2/4 GRAY (-) HOOD PINSWITCH SHUTDOWN WIRE Hood Pin or DLPK Grey if Impala has Factory Hood Pin
H2/5 BLUE/WHITE (-) 200mA 2ND STATUS/REAR DEFOG Not Used
4-pin satellite harness diagram
1 BLUE STATUS OUTPUT DLPK Blue/White
2 ORANGE (-) ACCESSORY OUTPUT Not Used
3 PURPLE (-) STARTER OUTPUT Not Used
4 PINK (-) IGNITION OUTPUT Not Used
Heavy gauge relay wiring diagram
1 PINK (+) (30 AMP) OUTPUT TO IGNITION CIRCUIT Pink @ Ignition Plug
2 PURPLE (+) (30 AMP) OUTPUT TO STARTER CIRCUIT Not Used
3 ORANGE (+) (30 AMP) OUTPUT TO ACCESSORY CIRCUIT Brown @ Ignition Plug
4 RED (+) (30A) HIGH CURRENT 12 INPUT RED / white #1 @ BCM under driver dash, black plug, pin 1
5 PINK/WHITE (+) PROGRAMMABLE OUTPUT Not Used
6 RED (+) (30A) HIGH CURRENT 12V INPUT RED / white #2 @ BCM under driver dash, black plug, pin 2
Door lock harness, 3-pin connector
1 BLUE (-) UNLOCK OUTPUT DLPK Blue
2 EMPTY NOT USED
3 GREEN (-) LOCK OUTPUT Not Used
DLPK ( Follow diagram )
Violet/White to 4113 Violet/White Tach
Blue/White to 4113 Blue Status Output
Grey to 4113 H2/4 Grey ( if Impala equipped with hood pin )
Blue to 4113 Blue Unlock
Plus these 5 wires to Impala as per diagram
Yellow
WHITE/ Black
Pink
Light Green
Brown
Soldering is fun!