Yung alternator ng Trooper or charging system is technically called an IC integral regulator charging system. Its solid state and is mounted along with the brush holder inside the generator (alternator) on the rear end cover (sabi nga ni Redhorse). Nasisira talaga yun but dapat malaman mo kasi di na macha-charge yung battery. May ammeter naman mga trooper. May 9 na diodes kasi yan inside to convert A.C current to D.C current then the output is controlled by the regulator (para di mag-over current). Pag nasira yung regulator wala ng current papasok sa battery. HTH and paki-post paano ginawa yung alternator including cost.