it has a inbuilt regulator
it doesn't have one the alternator is regulated in side
Inside the alternator. Replacing it requires careful disassembly of the rear shell and then soldering the new unit in place. Best for persons with experience.
The alternator is overcharging due to the regulator malfunctioning. Replace the alternator.
The easiest way to check any alternator in a car is to have the vehicle running and use a VOLT meter to read across that battery terminals. The voltage should be in the range of 13.4 volts to 14.5 volts..no lower, no higher. If either low voltage or high voltage exist, that alternator is probably defective.
Remove the wiring harness from your 1990 Subaru alternator. Remove the alternator belt. Remove the alternator retaining bolts. Reverse the process to install your new alternator.
If the radio and climate control panel in a Subaru Outback are flashing when the headlights are on, it may indicate an electrical issue, such as a faulty ground connection or a short circuit. This could cause a voltage fluctuation that affects the dashboard electronics. Additionally, issues with the battery or alternator, such as low voltage or inconsistent power supply, might also lead to this behavior. It's advisable to have the vehicle inspected by a professional to diagnose and resolve the issue properly.
To remove the alternator on a Subaru Outback, first disconnect the negative battery cable to prevent electrical shock. Then, remove any components obstructing access to the alternator, such as the serpentine belt and possibly the intake duct. Unbolt the alternator from its mounting bracket and disconnect the electrical connectors. Finally, carefully lift the alternator out of the engine bay.
The oil sending unit on a 2002 wrx subaru is almost under the alternator. I suggest you remove the alternator and it is easier to remove the oil sending unit.
Directly below the alternator on the block.
top of front of engine, under alternator
There should be a bolt attached to the alternator that should work.
Danger High Voltage