tach woes

Guest

Just installed a MSD 6A ignition and am having a problem getting the tach to work. Installed according to the instructions,and connected the tach output of the MSD to the tach wire with no joy. A call to MSD told me i needed a tach adapter, so i got one. The tach now works sort of. It won't read below a 1000 rpm, and will read to about 3000 rpm then drops to 0 rpm. Anouther call to MSD said that there must be a filter in the circuit that must be bypast. I couldn't find one. The only thing i found was the cicuit board in the tach housing. Has anybody had this problem, and is there an answer. Buy the way, the distributer is a stock unit with a Pertronix Igniter system. Heeeeeeeeeelp, please. Cheers Paul

6/26/017:24 PM

Original Post

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