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    Tachometer wire...

    What gauge should I run for this....? It is a Sun Super tach (if that matters) I just need to know what type of wire to go pick up. Im going to take apart the tach now and make sure all is alright on the iside, I would like to run the wire for it today while I wait for that damn ATC sensor.
    "Shakedown"- 1991 Grand Marquis GS Dual exhaust, Magnaflow xl turbos, Rear anti sway bar, Outlaw 1 wheels, 43k miles
    1985 GMC 1500

    #2
    Not sure about the gauge wire to be used... but I was told you connect the signal wire from the tach to the green wire on the coil plug.
    '97 Cadillac Catera - 3.0 DOHC V6, 75k
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      #3
      Originally posted by BGoins12 View Post
      Not sure about the gauge wire to be used... but I was told you connect the signal wire from the tach to the green wire on the coil plug.
      my sunpro tach came with 12 or 14ga. the green wire = yes


      I think your tach should have 4 wires like the newer ones do, unless they combined two of them that both need 12v
      sigpic


      - 1990 Ford LTD Crown Victoria P72 - the street boat - 5.0 liter EFI - Ported HO intake/TB, 90 TC shroud/overflow, Aero airbox/zip tube, Cobra camshaft, 19lb injectors, dual exhaust w/ Magnaflows, Cat/Smog & AC delete, 3G alternator, MOOG chassis parts & KYB cop shocks, 215/70r/15s on 95-97 Merc rims

      - 2007 Ford Escape XLT - soccer mom lifted station wagon - 3.0 Duratec, auto, rear converter delete w/ Magnaflow dual exhaust

      - 2008 Mercury Grand Marquis Ultimate Edition - Daily driver - 4.6 2 valve Mod motor, 4R75E, 2.73s. Bone stock

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        #4
        connects to the negative side of the coil
        89 townie, mild exhuast up grades, soon to have loud ass stereo....

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          #5
          You should be fine with anything around 16 gauge.
          ~David~

          My 1987 Crown Victoria Coupe: The Brown Blob
          My 2004 Mercedes Benz E320:The Benz

          Originally posted by ootdega
          My life is a long series of "nevermind" and "I guess not."

          Originally posted by DerekTheGreat
          But, that's just coming from me, this site's biggest pessimist. Best of luck

          Originally posted by gadget73
          my car starts and it has AC. Yours doesn't start and it has no AC. Seems obvious to me.




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            #6
            Alright... thanks. It is a 4 wire setup... one unlabeled black wire then 3 others labeled *Ground *signal *ignition Switch.

            Ill get some color coded 16g as the other three are just blue... Im replacing it all because it is old shit, and there is only about 3 inches left on the tach.

            Thanks again guys.
            "Shakedown"- 1991 Grand Marquis GS Dual exhaust, Magnaflow xl turbos, Rear anti sway bar, Outlaw 1 wheels, 43k miles
            1985 GMC 1500

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              #7
              Gauge isn't real important, 16 should be fine. It carries no appreciable amount of current.
              86 Lincoln Town Car (Galactica).
              5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

              91 Lincoln Mark VII LSC grandpa spec white and cranberry

              1984 Lincoln Continental TurboDiesel - rolls coal

              Originally posted by phayzer5
              I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

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                #8
                Originally posted by 91grandmarquis View Post
                Alright... thanks. It is a 4 wire setup... one unlabeled black wire then 3 others labeled *Ground *signal *ignition Switch.

                Ill get some color coded 16g as the other three are just blue... Im replacing it all because it is old shit, and there is only about 3 inches left on the tach.

                Thanks again guys.
                Unlabeled black wire is probably for illumination. Wire it to something that gets 12v with the headlights on.
                Originally posted by gadget73
                There is nothing more permanent than a temporary fix.
                91 Mercury CP, Lopo 302, AOD, 3.08LSD. 3g upgrade, Moog wagon coils up front, cc819s in the back. KYB GR-2 police shocks. Energy suspension control arm bushings. Smog deleted.
                93 F-150 XLT, 302, ZF 5-spd from 1-ton, 4wd.
                Daily--07 Civic Coupe. Bone stock with 25k miles
                Wife--14 Subaru Outback. 6-speed.
                95 Subaru Legacy Wagon--red--STOLEN 1/6/13

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                  #9
                  I opted out of putting the tach in... There is no place on this dash that it doesn't look like dog shit. Ill just keep it for later.
                  "Shakedown"- 1991 Grand Marquis GS Dual exhaust, Magnaflow xl turbos, Rear anti sway bar, Outlaw 1 wheels, 43k miles
                  1985 GMC 1500

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                    #10
                    it might be cool to take out the clock and get a small tach, then get some black plastic the cut a hole for the tach to fit in. i think it would look kinda sharp
                    sigpic

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                      #11
                      Originally posted by 99grandmarquis View Post
                      it might be cool to take out the clock and get a small tach, then get some black plastic the cut a hole for the tach to fit in. i think it would look kinda sharp
                      ^^^ that approach works pretty well.


                      TOTCG once just electrical-taped a 3-3/8" tach pod onto his steering column. After I bought the car, I moved it down where he'd had the AutoGage 3-gauge pod, which in turn is where the factory ashtray used to be.
                      2012 Mazda5 Touring | Finally working on the LTD again!

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                        #12
                        It would... but I need the clock for my DD even if it is only in the summer. Im sure something will come to me.
                        "Shakedown"- 1991 Grand Marquis GS Dual exhaust, Magnaflow xl turbos, Rear anti sway bar, Outlaw 1 wheels, 43k miles
                        1985 GMC 1500

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                          #13
                          I've always thought a digital tach where the clock is would be sneaky.


                          '90 LX 5.0 mustang
                          Big plans

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