62 Valiant 200 / 170 cuin /6 - Odd smell - then dead battery

Need some ideas...First, I have new battery, new voltage regulator, car runs great, after battery dies it charges fine... So here's the situation...All happy driving and then I smell this very acrid odor - don't think electrical, but kind of like burning rubber...then when I try and restarrt the engine I find the battery is drained...I hook up a charger, it takes a charge quickly and it starts right up...Have 12 volts out of the alternator and about 10 from the voltage regulator. I have converted ammeter to voltmeter and get 11-12 volts when running...Oh yeah...another odd thing my right side blinker fails intermittently...Any ideas? TIA...