Some sort of constant battery draw - Honda Prelude Forum

4bangincivic · 05-23-2011, 07:46 PM

Alright guys, I'll give you the low down first. My buddy is having a baby so I picked some subs off of him. Two 12" 1200w subs with a 500w amp. I know the subs were underpowered so I just unhooked one sub and it beat just fine. I've since had a constant power draw causing my battery to die and die over again, so I took out the subs and amp, unhooked everything, wires, etc..and I still have this power draw. When in acceleration/in coast my ABS, BRAKE, and BATTERY light come on solid, flicker, and flash. Now, what is the deal here? I've checked every fuse, and aftermarket wiring from the CD deck. I can't figure this out. If I remember right it's about 2 amps of draw when the car is shut off. Please help me out fellas.

4bangincivic · 05-24-2011, 01:10 PM

Anyone?

Kronn 98SH · 05-24-2011, 02:45 PM

Check the alternator fuse. I think it's #14 or 15.

indylude18 · 05-24-2011, 10:52 PM

Did you unhook the amp power wire at the battery? If so, and you still were losing power, try pulling the clock/radio fuse in the under hood box and testing for parasitic draw again. If you pull that fuse and you're still losing power, at least you'll know it has nothing to do with your sound system.

dre2day · 05-25-2011, 02:54 PM

Check the fuses, check the wire from the amp, and have the alt tested at autozone.

mortifiedvictim · 05-26-2011, 07:15 PM

I bet dre2day just nailed it. The car's alternator has a diode that allows the current to only go in one direction; from the alternator to the battery. If it goes bad it could drain the battery.

4bangincivic · 05-26-2011, 07:26 PM

The car has NO amp wiring, remote line, amp, or subs in it right now. I've checked all fuses, engine bay and cabin. All still look good. Alt is new as of 3 months ago.