Twice in last few days, my 81 300D would not start because of dead battery. After starting, bat light glows very slight dimly. After first time, I tightened alt. belt slightly & prob., including light, cleared up for couple of days - possible coincidence. After second time, I replaced voltage reg/brush assembly - still had very dim bat light - probably would not notice the bat light if I were not looking for it. After I measured voltage of "0" at bat terminals with engine off, I installed new bat - Die Hard Int. Bat light still glows very dimly - can hardly see it; gets dimmer when I rev the engine a little. Voltage at bat terminals with engine idling = 13; engine off, 12. Is the dim light trying to tell me there may be a slight prob with alternator? Any tips? TIA

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Wilton Strickland
Goldsboro, NC
91 350 SDL. 81 300D