How to check voltage output, determine issue by flashing field with 12v battery and change out voltage regulator. Links to tools and voltage regulator: =ppx_yo_dt_b_asin_title_o03__o00_s00?ie=UTF8&psc=1 =sr_1_6?ie=UTF8&qid=1547568307&sr=8-6&keywords=long+neck+pliers =sr_1_4?s=lamps-light&ie=UTF8&qid=1547568355&sr=1-4&keywords=multimeter