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Simple Tach Wiring Question Need Help QUICK!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by dawson444, Oct 11, 2001.

  1. dawson444

    dawson444 1/2 ton status

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    I am wiring in a tach on my 88 FI. Where do I hook the input wire into? There is a white wire coming out of the coil that isn't connected to anything, is this is? Or is it directly on the dist? Any help is appriciated!

    Dawson
    Raleigh, NC

    88 K5, 6" lift, 36" TSL Radials, 14 Bolt, Rancho 9012s
     
  2. solowookie

    solowookie 1/2 ton status

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    actually I believe that is correct... that is where my tach is wired

    <font color=blue> Jeff - may the force be with you</font color=blue>
    <a target="_blank" href=http://coloradok5.com/gallery/Jeffs-Stuff>link to k5's</a>
     
  3. shaggyk5

    shaggyk5 1/2 ton status

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    i just put my tach in today. The input attaches to the lead coming from the coil out to the little offshoot on the top wher all the wires plug into the bottom. On the top it shold sayy BATT on one sideof the little off shoot, and TACH on the other. (actally right next to each other) under the cap (actually the coil cover) I had three wires. red black and yellow. Blachk was obviously the ground, and red went to the side that was labeled BATT. Yellow went to the TACH side, and nothing pluged into the bottom. so i fed a wire into the spot where there was no plug (under the yellow wire) The wire had a female spade connect on it, this attached to the front prong of the metal clip on the end of the yellow wire. (All this will make sense when you take it apart.)


    Thats it.

    --matt
    <font color=blue>86, 350 crate, 33's.</font color=blue>
    <font color=red>Lop Sop Doi Off-Roader</font color=red>
     
  4. dawson444

    dawson444 1/2 ton status

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    Where are all these wires? Under the coil cover? How do I get the coil cover off? Thanks!

    Dawson
    Raleigh, NC

    88 K5, 6" lift, 36" TSL Radials, 14 Bolt, Rancho 9012s
     
  5. shaggyk5

    shaggyk5 1/2 ton status

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    onthe coil cover there are 2 screws. (on mine one was strait front and the other was in the back by the firewall. take those out and the cover should lift right off, dont even need to mess with the plug wires. Once you lift that off you should see exactly what im talking about.
    look on the cover for the spot that says BATT and TACH. the wires and stuff go right to there.


    --matt
    <font color=blue>86, 350 crate, 33's.</font color=blue>
    <font color=red>Lop Sop Doi Off-Roader</font color=red>
     
  6. dawson444

    dawson444 1/2 ton status

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    Ohhhh you mean pull the dist cap off. On mine the short plug wire in the middle of the dist cap went to a little cylinder. I'm assuming it was the coil, and coming out of that was a bunch of little wires. The little white wire with nothing attached to it was coming out of there. Solo is this where you attached yours? I'm wondering if shaggy's is different b/c it is carb, and mine and solo's is FI, hmmm Any suggestions? Thanks agian!

    Dawson
    Raleigh, NC

    88 K5, 6" lift, 36" TSL Radials, 14 Bolt, Rancho 9012s
     
  7. dawson444

    dawson444 1/2 ton status

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    Solo what year truck was this on? Was it FI? Thanks!

    Dawson
    Raleigh, NC

    88 K5, 6" lift, 36" TSL Radials, 14 Bolt, Rancho 9012s
     
  8. TorkDSR

    TorkDSR 1/2 ton status

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    Dear shaggy

    oh tough guy think you're hot stuff with that new tach huh? don't forget where it came from. It came from the same guy who gave you a place to sleep, eat, drink, mud, drink, repair, drink, and least not forget drink!!!!!


    happy birthday man.

    Love Tork

    Tork DSR
    I just got a winch, it takes the fun out of things.
    http://www.torkpig.homestead.com<P ID="edit"><FONT class="small">Edited by TorkDSR on 10/11/01 10:02 PM.</FONT></P>
     
  9. shaggyk5

    shaggyk5 1/2 ton status

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    Im describing my HEI, you sound like yours is different, if so, everything i told you might be N/A.....


    BTW, my new tach came from TorkDSR as my 20'th birthday present. What (else) are best friends for?

    --matt
    <font color=blue>86, 350 crate, 33's.</font color=blue>
    <font color=red>Lop Sop Doi Off-Roader</font color=red>

    <P ID="edit"><FONT class="small">Edited by shaggyk5 on 10/11/01 10:06 PM.</FONT></P>
     
  10. Thunder

    Thunder 3/4 ton status

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    Yes the white wire is the wire you use to connect a tach to.
    That is where I hooked up my tach on my 89. That is the stock tach hook up.


    <a target="_blank" href=http://coloradok5.com/gallery/Thunders-Blaze>http://coloradok5.com/gallery/Thunders-Blaze</a>
    <font color=blue>NEVADA: Where the pavement ends, and the West begins.</font color=blue>
     
  11. 84_Chevy_K10

    84_Chevy_K10 Banned

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    On the old style pre-efi HEI, the TACH terminal on the distributor is where it goes.

    On the new style, I'd think you'd just hook it up to the negative of the coil, but I'm not sure.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  12. shaggyk5

    shaggyk5 1/2 ton status

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    yes, this TACH terminal is what I described. Sorry, i just assumed you had my style hei.......

    --matt
    <font color=blue>86, 350 crate, 33's.</font color=blue>
    <font color=red>Lop Sop Doi Off-Roader</font color=red>
     

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