azmichael1 Posted October 1, 2011 Report Share Posted October 1, 2011 I recently redid the engine compartment of my '48 P-15 with oriiginal positive ground 6 volt electrical system. I removed the generator so that I could paint the engine. when I finished the project, the battery would not hold a charge or start the engine so I bought a new one, which started the car right off but the ammeter went far to the left indicating no charge. I researched the problem and read that if the generator were removed, the electrical had to be polarized after it was re-installed. Will failure to polarize the system keep it from charging ? From what I read it's pretty important. Also does anyone know if a '48 p-15 6 volt system is "A" circuit (polarized at the generator) or "B" circuit (polarized at the regulator) Any help will be greatly appreciated. Mike '48 p-15 Delux Apache Junction, Arizona Quote Link to comment Share on other sites More sharing options...
ptwothree Posted October 1, 2011 Report Share Posted October 1, 2011 Found it! Page 84 of the shop manual, item #3 bottom right hand of page... Quote Link to comment Share on other sites More sharing options...
oldodge41 Posted October 1, 2011 Report Share Posted October 1, 2011 Check this thread. A search for "Polarize" will bring up a lot of info. http://www430.pair.com/p15d24/mopar_forum/showthread.php?t=26276&referrerid=7217 Quote Link to comment Share on other sites More sharing options...
TodFitch Posted October 2, 2011 Report Share Posted October 2, 2011 You almost never need to polarize a generator... Only if you rebuild it or maybe if its been sitting on the shelf for 40 or 50 years and the residual magnetic field in the iron core has dissipated. Much more likely it that you've painted things so well that the generator and/or regulator are not properly grounded. Quote Link to comment Share on other sites More sharing options...
azmichael1 Posted October 2, 2011 Author Report Share Posted October 2, 2011 Thanlks for all the great information guys...........I should be able to have "Stella Baby" back on the road a lot sooner thanks to your help. Mike Quote Link to comment Share on other sites More sharing options...
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