/stoplights/risks. Became losing battery voltage even as automobile became on. As soon as i disconnect the neg. On battery voltage starts offevolved going up rapid. Also after a while of being on if i turn it off it may not begin again. Lighting fixtures dim and starter wont make any sounds. But battery reads over 12.5v. Whats going on ..??. The voltage from the generator with the car strolling (of direction). It ought to be approximately 14 volts. Now, again with the auto jogging, check the output beyond the regulator. At that point the reading have to be 12 or less. Take a look at the analyzing at the battery with the engine off. It need to be strong with the engine off. Electric may be pungent to diagnose every so often. Can also your weekend cross properly! Jay.