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Thread: need help wiring!!

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  1. #1
    Join Date
    Oct 2003
    Posts
    473

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    You have redundant relays is all. I used the factory supplied existing relays in your same powercenter, for the starter & the fuel pump. You can too, or just use the ones you have wired into the harness as your doing. The first fire-up is close!

  2. #2
    Join Date
    Jun 2007
    Location
    maine
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    1,458
    alright guys so heres the progess.. i traced the grey wire from the fuel pump back to the fuse box and it went into the fuel pump relay so i spliced my fuel pump positive wire on the new 5.3 harness into that grey wire. does this sound correct?also i connected the stock 4.3 starter crank solenoid wire(purple) right to the 5.3 starter and will not use the one on the 5.3 harness. this should be fine to correct?

    so all that is left is the ignition wire which someone said is any of the pinks? can someone verify if this is correct? or maybe use paint and draw an arrow on one of my pictures to the correct wire . thanks guys
    09 CREWCAB LTZ SILVERADO, 6.2, SIX SPEED, CAI,

  3. #3
    Join Date
    Sep 2007
    Location
    Texas
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    5,301
    I still cant find where those plugs are, they have to be hidden in the fire wall some place.

  4. #4
    Join Date
    Nov 2003
    Location
    Denton Texas
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    20,540
    There should be some pink wires coming from the original harness that get 12v only when the key in on in the run position. Usually a coil wire or distributor wire coming from the original engine.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  5. #5
    Join Date
    Jun 2007
    Location
    maine
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    1,458
    can i use a test light to check these? i hooked up my fuel lines last night so if i turn on the key the fuel wont be spraying all over. and then i could check for power when the truck is off and then with the key in the on position?

    would it be one of these 3 pink wires that go into my fuse center?

    09 CREWCAB LTZ SILVERADO, 6.2, SIX SPEED, CAI,

  6. #6
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Put a test light on them and see if they light up when you turn the key on, thats the best test you can do.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  7. #7
    Join Date
    Jun 2007
    Location
    maine
    Posts
    1,458
    Quote Originally Posted by RedHeartbeat View Post
    Put a test light on them and see if they light up when you turn the key on, thats the best test you can do.
    Okay ill try that! thanks greg.
    09 CREWCAB LTZ SILVERADO, 6.2, SIX SPEED, CAI,

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