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slpin Jul 31st, 02, 8:10 PM Hey all any idea to get the tach working, I plugged the green wire into the 6AL unit but the tach still stay at the "shifting" rpm. I have a auto gague 5in tach with part number 233905. Should i plug it in the negative coil? BillsCamino Jul 31st, 02, 8:44 PM The tach needs to be plugged into the 6AL tach output. However, some tachs require a MSD adapter. Consult the MSD website for details. slpin Jul 31st, 02, 8:56 PM oops, wrong forum, apologies... when i plug it in the tach output, it shows the shift light when it is on. when the engine is running, it just shows where i set the shift point, like its not receiving signal. i am sure i have a good connection to the msd 6al tach output too.. http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=2244&prmenbr=361 ^the one with the 8000rpm is mine. Georgia69 Aug 1st, 02, 10:21 AM MSD 6AL works fine with my 69 stock Chevy tach. I did not need the MSD tach adapt. ------------------ Mike Newby 69 Chevelle 355/TH200-4R 97 Grand Prix GTP 64 Chevy C10 Pickup 79 Suzuki GS550 | ||