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Old 12-18-2018, 12:25 PM   #18
Wrenchbender Ret
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Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,190
Re: 3 speed overdrive with an HEI distributor

Hook the interrupter wire to the tach term. on the HEI. I had test equipment that shorted cyls. for comparison & that's the way it hooked up. I checked with the equip. manufacturer & they said it worked that way. I did it many times & never had any failures.
George
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