1998 GMC Sierra, Astro Start

Received a Astro Start model 803 remote car starter as a gift and want to install it in a 1998 GMC Sierra extended cab pickup with auto tranny and the 5.7 engine. All I want to do is start the truck, no door locks or anything else. Do I need the bypass module for this truck?? and how hard of a job is it to do??? Anything I should know before I start the install??? Thanks for any help that you can provide!!

You WILL Need to use PASS 2 ByPASS:

Constant 12 volts	RED	IGNITION SWITCH HARNESS
Ignition 12 volts	PINK	IGNITION SWITCH HARNESS
Starter	YELLOW	IGNITION SWITCH HARNESS
Dome Light	PURPLE (-)	AT EITHER PIN SWITCH *
Trunk Pin Switch	N/A
Parking Lamp	BROWN (+)	AT HEADLIGHT SWITCH
Power Lock	L BLUE	DRIVER KICK
Power Unlock	WHITE	PANEL **

* PURPLE (-) Dome Light Wire Is Also Located At The Headlamp Switch. ** **Without OEM Keyless Entry ........ Reversal Rest At Ground Door Locks
**With OEM Keyless Entry......  Positive Pulse Door Locks

Accessories
Window Up	D\ D BLUE P\ L BLUE @ MAIN SWITCH
Window Down	R/ BROWN S/ TAN
Ign Key Warn	L GREEN (-)	48 PIN CONN. TO LEFT OF STEERING COL.
Trunk Release	N/A
OEM Horn	BLACK (-)	48 PIN CONN. TO LEFT OF STEERING COL.
Headlights	YELLOW (+)	AT HEADLIGHT SWITCH
OEM Alarm Arm	N/A	NO OEM ALARM PRESENT IN SCHEMATICS
OEM Alarm Disarm	N/A	NO OEM ALARM PRESENT IN SCHEMATICS

Reversal Rest At Ground Power Window Circuit

Remote Start
Tach Signal	WHITE	AT IGNITION COIL *
Ignition #2	WHITE	IGN. SWITCH HARNESS (HEAT/AC)
Ignition #3	ORANGE	IGNITION SW. HARNESS (TRANSMISSION)
Accessory	BROWN	IGNITION SWITCH HARNESS
Neutral Safety	NOT GROUNDING TYPE -	OEM SWITCH OPENS STARTER CIRCUIT
Brake Light	WHITE (+)	AT SWITCH ABOVE BRAKE PEDAL
Reverse Light	L GREEN (+)	AT SWITCH ON TRANSMISSION
Rear Window Defrost	N/A

* Ignition Coil Is Located On Passenger Rear Of Engine. 
G.M. Passlock II 

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MO

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