2001 Silverado 5.3L Relay needed/tach Q?

Sup, I have a 2001 Chevy Silverado 5.3L, only 1 ignition is hooked up right now. I know I need to wire up the 2nd ignition, do I need a relay for the 2nd ign. to work properly? Also, where is the best place to find a tach source? I heard the odd colored coil or white wire behind cluster? He wired it to the BCM I believe and he said it wouldnt tach learn. Just lookin' for other Ideas, Is hookin up the tach wire necessary? Thanx, much appreciated!

YO.........Guess U R installing Remote Start???U can use odd color Injector wire for Tach PulseU will need more than 1 RelayIf U R not sure on hook-up, seek help

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

* 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. Positive Pulse Door Locks

Accessories
Window Up	D\D BLUE P\ D BLUE @ SWITCH
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 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. *
Ignition #2	WHITE	IGNITION SWITCH HARNESS
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.G.M. Passlock II MO

Don't Learn from Others Mistakes

You Might Be the One That Knows.

Its already hooked up, and was fine. Then my SES light came on, and a next time I drove the truck the tranny wouldnt shift into 3rd cause the 2nd ignition wire wasnt hooked up.....So will I need a relay off my CLifford RS 3.5 for just the 2nd ignition tho? ANd what about the 3rd? Thanx!

All wires which involve the RS, need to be wired in and powered. Regards EVIL Teken . . .

Didn't understand... 

     :)~ ....?

MO

Don't Learn from Others Mistakes

You Might Be the One That Knows.

Hooked up the 2nd ignition wire, and the tranny shifts fine now! The SES light is still on, will it take a few starts to clear it? Also, the tach learn worked!

It will go off eventually if the codes are no longer present.Tacomacrew

I took the battery off for an hour or so, and hooked it up and there is no longer a SES light! Yaaaaay! Thanks guys, I very much so appreciate all the info!