| CAUSE | DESCRIPTION |
| Battery is failing | overcharged - damaged, warped plates too old - sulphated lack of water description photos and fix here |
| Alternator
regulator is failing |
alternator output falls under 11 volts description photos and fix here |
| Alternator
belt is slipping |
usually squeals - lots of noise description photos and fix here |
| Poor electrical connections | battery terminals loose description photos and fix here |
| Poor electrical connections | main cable connections (alternator - + post) loose description photos and fix here |
| Poor electrical connections | mail cable is corroded description photos and fix here |