I installed one on my J about 18 months ago. I initially ran into some challenges I suspect largely a result of an original distributor that has some wear. My conclusion from reading various posts is that nearly 100% of the time the issue is the distributor or the installation. The Pertronix works and it works very well! I wound up bench testing it outside of the distributor to understand how much air gap is needed between the magnet sleeve and the ignitor module and the alignment of the ignitor module and the magnet sleeve. These are the two issues that determine if you will get spark (assuming proper electrical connections of course). Specifically I had to move the magnet sleeve up about 1/8 inch on the point cam to better align the sleeve with the module, rather than seat it down all the way, even though that is counterintuitive. Then I had spark. Again, it had something to do with the nature of my particular distributor. The Pertronix should work just fine out of the box. You also don't need to jumper the ballast resistor with a stock coil. The unit will fire on about 8 volts or greater and cranking voltage exceeds that with a decent battery. I worked with John Lazenby and the Pertronix tech support and they were most helpful. I really like the unit. Carl Bilter _____ From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Gary Nelson Sent: Wednesday, May 02, 2012 1:55 PM To: Fern; Chrysler 300 Club Subject: RE: [Chrysler300] re using Pertronix electronic ignition on dual points distributor Fern and all I had the same experience when I did a bench test w/ Pertronix installed in my 57 300 distributor, no spark. I tried a second unit I had for my 57 Imperial. Same thing, no spark. I called Pertronix and talked to chief tech. He asked if I could send him the distributor so they could analyze. He reported back that they found the plastic rotor was not seating all the way down over the cam lobes. They tapped it down and it worked. When I got it back I put a large socket over the top of plastic rotor and gave it a light tap. I could see it seat. Bingo it worked. They sent me a free unit for my trouble. Thank you, Gary, the parts doc Escondido, CA USA Land of the Avocado Mail: garythepartsdoc@xxxxxxxxxxxx <mailto:garythepartsdoc%40glnelson.com> 760.751.1958 -----Original Message----- From: Chrysler300@xxxxxxxxxxxxxxx <mailto:Chrysler300%40yahoogroups.com> [mailto:Chrysler300@xxxxxxxxxxxxxxx <mailto:Chrysler300%40yahoogroups.com> ]On Behalf Of Fern Sent: Tuesday, May 01, 2012 9:03 PM To: Chrysler 300 Club Subject: [Chrysler300] re using Pertronix electronic ignition on dual points distributor Has anyone on the list had any success in using the conversion by Petronix in their dual point distributor? We have tried to install that kit in my 1962 300H and cannot get it to work. Is there a special way to index this unit to make it work? Any help would be greatly appreciated. Who is the member on this list that sells these? Fern with 300H conv [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylangYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/