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Thread: Wiring for Speedometer help!!

  1. #11
    Join Date
    Aug 2007
    Location
    Needville,TX
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    433
    here is a pic of one, compliments of ebay!

    might just have to proceed with my custom autometer gauges

    89' GMC RCSB 6.0L LQ4, T56, 4.56 Gears

  2. #12
    Join Date
    May 2004
    Posts
    2,120
    Ok, that cluster uses a 2000K pulse and the LS1 4L60E uses a 4000K Pulse. You'll either have to install a dual reluctor ring on the tranny tailshaft like S&P sells for $500.00 or use a Dakota Digital Signal interface with 2000k pulse like this.

    Universal Speedometer Signal Interface


    97 GMC, 2002 LS6.

    1991 GMC Syclone #1428

  3. #13
    Join Date
    Nov 2003
    Location
    Denton Texas
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    20,540
    I did it on my buddy's 89 model when we put the LT1 in it. It's been so long ago that I can't remember how we did it though. It can be done.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  4. #14
    Join Date
    Aug 2007
    Location
    Needville,TX
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    433
    [QUOTE=NITROUS;161784]Ok, that cluster uses a 2000K pulse and the LS1 4L60E uses a 4000K Pulse. You'll either have to install a dual reluctor ring on the tranny tailshaft like S&P sells for $500.00 or use a Dakota Digital Signal interface with 2000k pulse like this.

    Is the 80ea 4k pulse output also. When I ordered my tune I told them I need the speedo output to be for my stock gauges


    Quote Originally Posted by RedHeartbeat View Post
    I did it on my buddy's 89 model when we put the LT1 in it. It's been so long ago that I can't remember how we did it though. It can be done.
    Man I sure would like to know how ya'll did it!
    89' GMC RCSB 6.0L LQ4, T56, 4.56 Gears

  5. #15
    Join Date
    Apr 2007
    Location
    Willows, California
    Posts
    41
    I was thinking about doing something like this:




    The thing is I don't know if soldering extra wires onto the original VSS wires will foul up the signal or not.
    Pete
    2002 Chevrolet Silverado
    2002 Pontiac Trans Am WS.6
    2004 Dodge Ram CCSB Cummins Turbo Diesel
    1989 Chevrolet Silverado RCSB - Work Truck, Vortec 454 swap in progress :rocking:
    1972 Toyota FJ-40
    1963 Chevrolet Corvette Prostreet

  6. #16
    Join Date
    May 2004
    Posts
    2,120
    The LS1 or truck PCM doesn't put out 2000k so you'll either have to use the DD interface, install dual reluctor rings or mod the PCM which I think there's a DIY forum on Thirdgen.


    97 GMC, 2002 LS6.

    1991 GMC Syclone #1428

  7. #17
    Join Date
    Jun 2007
    Location
    maine
    Posts
    1,458
    Quote Originally Posted by Kros383SS View Post
    here is a pic of one, compliments of ebay!

    might just have to proceed with my custom autometer gauges

    i smell a 98 dash swap 8)
    09 CREWCAB LTZ SILVERADO, 6.2, SIX SPEED, CAI,

  8. #18
    Join Date
    May 2004
    Posts
    2,120
    wtfan18, did the 4000k pulse wire fix your problem?


    97 GMC, 2002 LS6.

    1991 GMC Syclone #1428

  9. #19
    Join Date
    Sep 2007
    Location
    Texas
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    5,301
    Quote Originally Posted by NITROUS View Post
    wtfan18, did the 4000k pulse wire fix your problem?
    Lance, You are running the caddy gauge cluster correct? I still can't get my gas gauge to work, also some of the lights to tell what gear i am in doesn't work. BOOH... I checked for that purple wire, but to tell you the truth i have no idea what im looking for.

  10. #20
    Join Date
    May 2004
    Posts
    2,120
    If you left the wiring to the neutral safety switch like it was originally with the Vortec harness I guarantee the PRND will workon the cluster. I'll see what I can do for you.


    97 GMC, 2002 LS6.

    1991 GMC Syclone #1428

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