In Reply to: Belanger posted by Serge on February 10, 2018 at 15:59:26:
First, stop buying new parts and putting them in until you know for sure the old ones are defective. The fact is 99.98% of all the non-starting/non-running issues we read about on these boards are due to some type of 12-volt conversion. The rest are fuel or compression related. Now, there is nothing wrong with converting from the original 6-volt/positive ground electrical system to a 12-volt negative ground system, read how Bruce(VA) explains it –see LINK below. My advice is to next stop trying to jump start it before you do some serious damage until you know for sure what all is involved. Verify the wiring is correct. That means using the correct gauge of battery cables too. If you have lights, disconnect them for now; you can always reconnect them later but take them out of the equation for now. The Pertronix EI comes with its own instructions. Search the archives here for much more info too on EI. Our HOW-TO’s has a ton of info as well, 12 volt conversions aplenty. Go to electrical subcategory and search down tow WIRING PICTOGRAMS by JMOR and download a copy for your shop. Get your battery tested. It must be a good brand that will sustain a charge under load. Your local starter shop or auto parts store can test it, usually for free. Simply connecting your battery charger up to it does not mean anything. Cheap/bargain house batteries have poor life spans and some are bad out of the box. There is so much to consider with the electrical system so begin a step by step problem solving method. I have a hunch you will uncover at least one incorrect issue with your setup. Many 12-volt conversions are done by shadetree mechanics who know little to nothing about the original 6-volt system so they just go ahead and slap a 12 volt battery in and begin to hack up the rest.