420A Please Help! Electrical Parasite!

[KROMEkid]

So I've had the car for some time now and the car always started right up. As it started to get colder this year it started to turn over slower and slower. Check the battery, bad, replaced it.
Well now my car can't sit 12 hours or the battery will be dead and obviously won't start.
Is there any common trends like this with DSMs?
Nothing has been replaced in some time. Last thing replaced was the power steering pump and that was a while ago.
Please help. This frickin sucks.

 

[rydereclipse]

When i had a N/T, I had an interior light that had blown (rear cargo area), so it wouldn't illuminate, but kept sucking power (it stayed powered even when the car was off, faulty switch) fixed it and problem solved.

Now, I have a Spyder and a GST, and the Syder has power drain issues. The power window switches are "sticky" so you have to make sure that they don't get stuck in the up position, or it kills my battery.

If it were me, I would triple check all the interior wiring/switches.

 

[eclipse420ags]

It might not have anything to do with the cold the starters usually last a while but there cheap and easy replacement thats what I would do.

 

[evo1rice]

I would think power drain happens only if there's a short somewhere. (ie faulty switch shorting to ground). If it happens when the car is off without a key in it, it means it involves a wire that is fed power outside the ignition or key dependant system. That sort of narrows down the possibilities. Think about the systems that are fed power without a key.

Starter is one of them. But make sure it is failing first before replacing. I would connect the negative battery terminal to the ground of a voltmeter, and look for continuity on the ground pin of the starter. If for some reason it's switch is failing, you should be seeing no continuity or higher resistance that is not the same as one you would get for a normal ground.

 

[wannabeboatguy]

http://www.dsmtuners.com/forums/articles-electrical-wiring/179481-finding-short-partial-short-battery-drain.html

Use this.

 

[KROMEkid]

http://www.dsmtuners.com/forums/articles-electrical-wiring/179481-finding-short-partial-short-battery-drain.html

Use this.

Thanks for the help guys. I ripped apart my interior expecting to find a bad ground, switch, relay, etc. I actually gave up and was putting my deck back in and got zapped when my hand completed the ground from my deck to the car.
My keys were in my pocket the whole time.
Got the voltometer out and found almost 10v getting pulled through my deck. Not the wiring.
So, Sony deck lasted almost 2 years. Kinda blows. Me thinks a diode is burnt but I'm not going to try to fix it.
Warrantied my battery through all this too