Think there is a battery drain somewhere

you may have a short circuit in the system seek auto electriction

if you have these then the starter has an open in it and is bad.

Not sure I follow your problem.
The alternator puts out 13-14 volts at idle but very few amps. If you turn on the headlights at idle the voltage may drop to 12 until you raise engine speed. The amperage goes up with engine speed.
Is the battery voltage at least 14 when the engine speed is 1500RPM or more ?

I would think the cable on your IPOD is the problem here, replace it first. Use a good quality cable not a Walmart cheapy.

Yes and that was due to bad installation. I have had 3 car stereos installed on my 98 RAV4 through Best Buy and never had battery problems. I even had 2 amps installed as well but the installers had to make me buy this 200-dollar thing that would not drain the battery.

If you are getting a drain through the radio's power supply it could eventually drain down the battery if it was improperly installed, I would pull the fuse for the radio and see if the drain continues, if the drain does not stop there is another short somewhere. To learn more :

http://www.xcardiag.com/wholesale/automotive-battery-analyser-vat-560-tool-536.html

Do you hear a slight click coming from the engine area??? If not your starter selenoid is bad, and needs replacement. If you do hear a click but the engine is having trouble or slow very slow time turning, then it's your battery. If you hear your starter click, but no turn, then its your starter not turning over. If your instrument lights dim out by alot when trying to turn, then it still your battery which is drain. The battery doesn't completly need to be drain in order for your horn, lights to not work, It could be your battery simply drain and doesn't have enough cranking power to roll over the starter. But in this case issue description, It sounds like it is the starter. Could take it out and bring it to autozone and have them test it out.

If you get a spark when putting on the leads to the battery then there is power being used in the car. Your problem seems to be a slow leak of electrical power somewhere. I have experienced that many times it is a lamp that stays on when you think it is off. For example the trunk light stays on because the switch is not working properly so it drains your battery.

If your speakers make a sound like you said then the radio is directly connected to your battery or to a power cord thus draining your battery. Good Luck

First I would try resetting the ECU by disconnecting the battery for a few minutes. This will remove the code. Then see if it comes back. Mind you you will not pass inspection, because the ECU will need to monitor a certain amount of driving "cycles" before inspection will accept the findings. Before that, replace your O2 sensors, and get those out of the way. P0770 is a Shift Solenoid E Malfunction. You will have to look at a manual to find out which Shift Solenoid that "E" refers to and where it is located. TC lockup, refers to the TC lockup solenoid. If so I would try replacing that and going from there. The auto transmission is a pretty complicated beast, and even the most experienced DIY'ers would go past the normal maintenance. HOWEVER, changing solenoids is considered, at least to me, DIY maintenance. Whats is your RPM when cruising at say 60 mph. If its more than 2400 rpms, then i would say it is your lockup solenoid. hope this helps

Here is a website that a free manual can be down loaded for your vehicle


http://ezinearticles.com/?Find-the-Free-Auto-Repair-Manual-You-Need-Online&id=92717

Go to Walmart buy four quarts of oil it will say in the owners manuel what to get, a oil filter the store will have a book to look up the car know the engine size and model,a filter wrench, a drain pan and a jack to carefully jack up the front area of the passenger side of the car . I use a old rag and double fold it so the jack dosent mess up the jack point of the car. It will tell you also in the owners manuel where to jack it. PLEASE do not use the factory jack to go under the car buy one. OR go to the dealer and ask for a oil change coupon or go to Goodyear .