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Tach wire
installing a new MSD , my old one didn't have a wire for the tach. Were can located the wire that controls tach.With out ripping out the dash. Some were in the engine compartment. Chassis is 2006, looking were and what color the wire is. I order a msd 6420 and they ship a 6425 also any pros or cons on these 2 units.
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Kenny
Last edited by kennyhbh; 05-25-2013 at 02:42 PM..
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