Quickly diagnose whether you need a new battery or if the alternator is your gremlin. Here is a multimeter that'll test everything you need. http://www.amazon.com/gp/product/B00B7CS3UY?ie=UTF8&camp=1789&creativeASIN=B00B7CS3UY&linkCode=xm2&tag=sixtyfivefo05-20 A basic in car alternator load test shows you whether or not it is any good. You should expect to see a reading of 13.5 volts or more with the Headlights/high beams, heater on high, wipers on, dome light on, rear window defrost and radio. Links to videos at end: Battery/epsom salt: https://youtu.be/G0odjtntH3I Wipe away paint scratches: https://youtu.be/36embO9Jts0 Remove rust from chrome: https://youtu.be/JkHyARsjNEg