Your mechanic has a device that can check to see if there is a draw on the battery that is more then it should be.Originally Posted by schapman43
Once you know if there is a draw, you should disconnect the stuff you have added from the battery. If you do it all at once, and then the draw is reduced to an acceptable level (There is always some sort of draw ont he battery, no matter what) then you know it is something you have added. Then go through the items one by one, removing the battery cable, and checking from a drop in the current drawn from the battery, until you locate the right item.
Once you have done that, correct it.
That, or add a relay to all the additional power wires you added that come offyour battery. That way, whent he car is off, nothing will be drawn from the battery.