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  • Tachometer

    Putting new clocks on, can someone tell me which wire is which please, ie tacho feed and light? Wiring is the bain of my life and not good with diagrams
    79SF
    xjr ohlins shocks, tarozzi forkbrace, bsa handlebars, bsm exhaust

  • #2
    White should be the signal feed and tan should be the bulbs. Black is ground.
    Last edited by bikerphil; 09-28-2015, 07:24 AM.
    2H7 (79) owned since '89
    3H3 owned since '06

    "If it ain't broke, modify it"

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    • #3
      Originally posted by bikerphil View Post
      White should be the signal feed and tan should be the bulbs. Black is ground.
      +1.
      81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

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      • #4
        Rob, if you are using an aftermarket tach, you can't use the signal wire for the XS tach, it is an AC voltage from the alternator. Conventional tach hookup would be the neg. side of the ignition coil.
        2H7 (79) owned since '89
        3H3 owned since '06

        "If it ain't broke, modify it"

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        • #5
          Thanks for the info guys
          79SF
          xjr ohlins shocks, tarozzi forkbrace, bsa handlebars, bsm exhaust

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          • #6
            If you are using aftermarket gauges, it should also be noted that almost all aftermarket cable-drive speedos use a 2:1 ratio at the speedometer drive. The XS uses a 2.9:1 ratio, so that would make a 2:1 speedo read about 1/3 fast...
            Fast, Cheap, Reliable... Pick any two

            '78E original owner - resto project
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