Are bigger ( higher capacity ) alternators very expensive and hard to find for the 93 Corolla 1.8 liter EFI?
I have an 120 VAC air cleaner in the back seat, running off an inverter, and when I also have the lights on at night and the rear window defroster on, it can start lowering the engine RPM's and making the inverter beep all the time, and the lights get dimmer. If I add the hazard flashers to the headlight usage at night, the engine RPM's go up and down with the flashing.
The guy at Goodyear today says that it may just be that the alternator doesn't have the capacity to handle all the usage.
AND I want to add a spotlight and a dash mounted map light, maybe even a laptop to the car too.