ok i have an jdm h22a in my eg hatch every time i get a different new battery all the power from the battery drains within a day ,i have changed my alternator about 3 times already but they were all used alternators ,would anyone know what the problem would be , would it be that i should get a brand new alternator or what? thanks

 

Start testing the individual wires according to the helms manual and you will be able narrow down your problem.

 

That thing looks like a wiring mess. What wiring did you do for the alternator and starter and such?

 

There might be a drain somewhere in the electrical system. Connect a volt meter to the battery terminal and monitor the voltage readings when the engine is idling, around 3000 rpm and engine off. The voltage should be between 12.5 to 14.5 when the engine is running. Turn the engine off and monitor the voltage drop. If the voltage continues to go below the normal battery voltage (~12vdc), then you have a drain. Start with any add-on connections or accessories by disconnect them one at a time until the voltage drop stops. If no problem found there, then move on to the fuse box to track down which circuit is causing the problem. Pay attention if you have tapped into any fuse proctected circuits.

 

yeah the voltage drops when on idle ,drops even more when i put the lights and ac on

 

yeah i know the wiring is all crappy got it like that