2001 Chrylser LHS. The battery is being drained when sitting overnight. Will not start in the morning! New Interstate battery has been tested and is good. Any ideas will be helpfull!!!!

TO FIND OUT IF THERE IS A BATTERY DRAIN. TURN OFF ALL SWITCHES, MAKE SURE THE GLOVE COMPARTMENT IS CLOSING RIGHT & THE LITTLE LITE IS GOING OUT. OPEN THE HOOD. IF THERE IS AN UNDER HOOD LIGHT, REMOVE THE BULB, OR UNPLUG THE LIGHT.
CLOSE ALL DOORS TIGHT. WAIT 30 SECONDS AFTER CLOSING THE DOORS, LOOK THROUGH THE WINDOWS, ARE THE COURTESY LITES ALL GOING OUT ." THEY MAY BE ON A DELAY TIMER ". DISCONNECT THE NEGATIVE CABLE FROM THE BATTERY, PUT ONE END OF A 12 VOLT CIRCUIT TESTER ON THE NEG. TERMINAL OF THE BATTERY, PUT THE OTHER END ON A GOOD GROUND. IF THE CIRCUIT TESTER LIGHT COMES ON SOMETHING IS DRAINING. TO FIND THE CIRCUIT THAT IS DRAINING, YOU WILL NEED TO OPEN THE FUSE/RELAY BOX PROBABLY NEAR THE BATTERY. ONE AT A TIME PULL EACH FUSE OUT, UNTIL THE CIRCUIT TESTER LIGHT GOES OUT. WHEN IT GOES OUT READ OWNERS MANUAL TO FIND OUT WHAT IS IN THAT CIRCUIT.