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Thread: Tach Questions

  1. #1
    Senior Member RACING JUNKIE
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    Tach Questions

    Hey guys I have two questions that perhaps someone can help on:

    1) I have a vintage SW 970B Pedestal tach in my 66 Nova. Havent hooked it up yet but was wondering if anyone knows whether it uses a sender and what/how the leads connect, ie color coding? I'd pay to find a copy of a set of instructions for one of these.

    2) also I have an SW Tach with a 119911 sender that I am putting in the Camaro- Is was in my Impala with a points set-up, now I am running off an HEI. Do I use the tach lead on the HEI for the primary, run a ground and then tap my light array? I should now this but wanted to check- I dont think an HEI makes a difference, but the sender is a rare bird and I dont want to fry it.

    Thnaks

    Scorp
    Cowards often find courage behind a keyboard. If you want to get personal, look me in the eye when you say it, and be man enough to deal with the consequences.

    Bullying whiny little scammers everywhere. Don't like it? Just keep crying.

  2. #2
    Senior Member RACING JUNKIE fla1976's Avatar
    Join Date
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    1,527
    Here is some info on tachs from MSD, whether an adapter is required. (page 11)

    http://www.msdpowersports.com/pdf/pn...ng_diagram.pdf


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