It has been some years since I bought an MSD box, but as I remember, there was always a little bag of wiring ends etc that came in the box with the box. One part of the instructions was a way to take one of the small wires in the box and jump around the MSD installation. One afternoon I was taking my infant daughter to the baby sitter---every time we got in my hot-rodded E-150 van she'd say, "Beach Boys, Dad" to remind me to put in a cassette---and in the rain the MSD conked out one more time. I had a spare with me and did a replacement. But when I got back home and looked at the pile of 'dead' MSD boxes piled up on the end of my workbench, I went out and bought a Mallory equivalent. It's still installed. My daughter and her husband just got back from three weeks in Europe. She's 35 years old.
KS