wfridolfson 10 Report post Posted January 5, 2013 my stepson's 07 mustang's alt is only putting out 11.67 volts, what is normal output, battery went dead, charged it and tested it and its good, looking to me like alt, any opinions Quote Share this post Link to post Share on other sites
69boss408 11 Report post Posted January 5, 2013 13 volts should be minimum then it will go up with draw , headlights on around 14 Quote Share this post Link to post Share on other sites
wfridolfson 10 Report post Posted January 5, 2013 thanks for the info Quote Share this post Link to post Share on other sites