Originally Posted by Ricktwuhk

Really bad idea. Read about the Battery Saver function.

Originally Posted by viper_crazy

I've been thinking about this issue, and having some car audio experience, one procedure most car audio installers perform/recommend is called "The Big Three Upgrade." It's not necessarily an upgrade in my opinion, but I got to thinking, this might help with the Auto Start/Stop.

Essentially, the "upgrade" I was thinking of in particular was running a secondary charge wire direct from the charging terminal of the alternator directly to the positive battery terminal. The factory wiring should take care of this, but since I have not had time to look at the system myself, I can't say where the factory charging wire goes to, how big it is, etc.

If anyone is willing to try this, definitely use a larger gauge, fine strand wire. If you don't know how to do this, do not perform this upgrade or DO YOUR RESEARCH FIRST.

Search for "car audio big three upgrade"

Originally Posted by viper_crazy

I don't understand how running a secondary charge wire in tandem with the factory connection directly from the alternator to the battery would be bad. The battery saver function shuts off modules and functions to prevent battery drain, or in the case of the Auto Start, would prevent Auto Start feature from shutting down the engine. Running a secondary charge wire to charge the battery would help keep the battery topped up. Or am I missing something I haven't learned about yet?