coil and ignitor have nothing to do with charging you need to load test battery and if its good than check voltage regulator, 92,s are famus for bad V.R,s and very easy to check you jast need a voltage meter.....................i just posted a response to another member and spelled out how to test it so find that thread its in this forum and follow directions you,ll know in under 2 minutes...........also check your battery ground cable.................................