Newbie here. I have a 79 Dodge Transvan with 360 engine. I am installing a Jacobs Pro Street Ignition system which consists of the coil and the "energy pack". According to the Jacobs wiring instructions, wires from the energy pack go to the magnetic pickup distributor. Unfortunately, the instructions don't say what to do with the original wires. According to the wiring diagram I have for the truck, the wires from the distributor come from [or go to] the Electronic Ignition Control Module. It might be that these wires are no longer used and that the Jacobs unit "replaces" the Module signal with its own. Then again, perhaps not. If anyone is familiar with ths installation, I would appreciate the benefit of your experience. For example, a wire from the jacobs unit goes to an ignition switch controlled 12 volt source. What is the best place to connect it?

 

Got an answer, but it was not easy. Jacobs has been purchased so the tech assistance on their website is no longer working. They are not listed on the new website, but accessing the tech help for Accel products finally produced an answer. Unfortunately, not the answer, but an answer. After phoning, it turns out that you just follow the instructions literally. Any wire not referred to is unused in the Jacobs application. Thus the old wires from the coil and the ignition module are taped off.

 

Sorry to hear you bought Jacobs-you may have wanted to ask about the product first. Terrible customer service since change of ownership and product longevity isn't the same either. You would have been much better off with MSD. Glad to hear you got it figured out though, at least you can run it for a while anyways.

 

You are quite correct. I have a "pro street" setup on my 87 Cadillac Allante with the HEI distributor. That unit works very well, but I don't drive the car much. I added Jacobs to my daughter's 1997 Taurus with the Distributorless ignition. That one never really made much difference and finally had to be disconnected for the car to run right. I have MSD in my 90 Buick Reatta. It made a considerable difference in performance and mileage. I am fitting the same unit to my 93 Oldmobile CS Convertible. Unfortunately, the 3.4 Twin Cam is a bear to work on, and pulling the coil pack to hook up the DIS unit was a nightmare. I am thinking about adding one to my 95 Old Aurora. Not sure yet. The Jacobs unit I am putting on the Dodge was a left-over from another project. Otherwise I would have stuck with MSD