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"I'm glad to hear that Pertronix and multi spark units work together."

There was, initially, some confusion about that. The sales rep that I talked to on the phone said that it wouldn't. When they told me that I could return the unit if it didn't work with my application, I got it and tried it anyway. I figured that it would work - and it did. I did, actually, have to send the first unit back. Worked fine until the first time that I washed the car. Evidently the robot that inserts the sealer goo at both ends had malfunctioned on one production run. They replaced the unit, free of charge and with no additional shipping charges however, and this one has been working flawlessly through car washes and the almost one complete month of rain that we've had here to date. Jacobs advertises that their unit will work immersed in water. When I got the second one, I hooked it up, filled a plastic mop pail and tried that (it comes with plenty of extra wire) before mounting it to the car. It worked.