Toyota Repair: 1989 Camry battery discharge, battery discharge, negative battery

Question
I bought a 1989 Camry a couple days ago. The previous owners said
you have to unhook the Neg. battery cable when not driving the car. They had a new alternator put on it, and checked at the local Toyota dealer. They couldn't find the problem.
I hooked up my volt meter, 12.66 resting   14.6 running with lights on. 4 cyl 3-se  223k miles. Everything still works AND
the AC is still cold. This morning I went out at 5am to go to coffee, and it wouldn't start. Is there a bleed somewhere that
you know of?  Thanks  Also the Battery is 1 year old and tests good.

Answer
The best way to check for excessive current draw is with an ammeter which your voltmeter should also have connections for, connect the leads to the DC A connections on the high 10A range, disconnect the negative battery terminal and connect the ammeter connectors in seies, one on the battery post and one on the terminals, make sure everything in the car is turned off, especially dome and trunk lights. Check the current draw, anything over .04A is too much, this would be 400 mA, if it's less than 0.03A(300mA) then switch to the low range to read mA, it should be no more than about 200mA, if it's alot higher than there is an excessive draw on the system. If it's enough to draw the battery down overnight it would probably be in the 4-5Amp range. The charging voltage you gave above is normal. Let me know what you find.