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I found a nice alternator plug & pigtail on ebay with a built in diode to prevent engine run-on with an msd ignition box. You don’t have to cut into the alternator harness to install the msd diode. It has a male & female plug with a built in diode. I bought 2 of them for about $12 with free shipping. I installed it today and it works and looks fine.
I wanted 2 of them for 2 different cars. They also sell them each, and with regular pigtails to replace damaged ones. Now that I know they work I will buy some spares. They don't mention MSD in the item description, they say they will prevent back feed that causes some idiot lights to glow dimly.
August 20th, 2019, 07:08 PM
