Hi Guys,in my 1952 3100 pickup,I have a brand new 1 wire 12 volt alternator and while driving in daylight without any accessories on my battery stays charged.When I put the headlights on ,that seems to drain the battery . My battery gauge goes to the D side about 1/2 way and when I put the turn signals on ,you can see the battery needle go with the signal. Could this be a bad headlight switch? All gruonding seems good. THX