2002 chevy silverado horn

Does this truck have a negative or positive pulse to activate the horn. Also any additional diagrams would be nice, i.e. stereo and alarm. Thanks, Mike

Alarm
Constant 12 volts	RED & RED / WHITE	IGNITION SWITCH HARNESS
Ignition 12 volts	PINK	IGNITION SWITCH HARNESS
Starter	YELLOW	IGNITION SWITCH HARNESS
Dome Light	TAN(DR) GRY/BLK(PASS)	PS (-) AT B.C.M. UNDER DRIVERS DASH *
Trunk Pin Switch	N/A
Parking Lamp	L BLUE (+)	AT HEADLIGHT SWITCH
Power Lock	L BLUE	AT B.C.M. BELOW THE STEERING COLUMN
Power Unlock	WHITE	IN BROWN CONNECTOR #202

* TAN (-) In Connector On The Right Covers Driver Door Only. GRAY/BLACK (-) Connector On The Middle Cover Passengers Door. Diode Isolation Needed, Cathode (Band) Side Of Diode Faces OEM Wires. #202 - See Positive Pulse Door Lock Diagram.

Accessories
Window Up	D\D BLUE P\ D BLUE @ SWITCH #211
Window Down	R/BROWN S/ BROWN IN EACH DOOR
Ign Key Warn	LT GREEN	IGNITION SWITCH HARNESS
Trunk Release	N/A
OEM Horn	BLACK (-)	STEERING COLUMN HARNESS
Headlights	WHITE (+)	AT HEADLIGHT SWITCH
OEM Alarm Arm	N/A
OEM Alarm Disarm	L GREEN (-)	AT B.C.M. BELOW THE STEERING COLUMN*

* There Are 3 Connectors In The BCM. The Disarm Wire Is Located In The Violet Connector. Must Go Into Both Driver And Passenger To Make Connections. #211- Reversal Rest At Ground Window Circuit OEM Horn- Black (-) In Ignition Switch Harness

Remote Start
Tach Signal	WHITE	FOR THE V-8 AT THE P.C.M. * #238
Ignition #2	WHITE	IGNITION SWITCH HARNESS #216
Ignition #3	ORANGE	IGNITION SWITCH HARNESS (HEAT/AC)
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 (+)	DRIVERS KICK PANEL
Rear Window Defrost	N/A

* Power Control Module Located At The Left Front Of The Engine Compartment Pin 10 of the 80 pin connector. WHITE-For The V-6 At The Coil On Top Of The Engine. Glow Plug Wire(LT BLUE) At Engine Control Module. See Tech Notes For Alt. #216 - See G.M. Extra Ignition Diagram. #238 - See G.M. Passlock II Diagram. ~The Rookie~

Rookie of the year that is...

Don't let the smoke out of your equiptment..it doesn't go back in.

That should help you out on that alarm.~The Rookie~

Rookie of the year that is...

Don't let the smoke out of your equiptment..it doesn't go back in.