For one year if I don't use the vehicle for 2 days, battery dies. 3 New batteries, amp meter indicates 4.6 amp drain (between + cable and battery terminal.
Any ideas/hints/solutions???

 

that is a huge draw. normal draw should probably be 20miliamps after all the modules enter sleep mode.

realize that if you are not using a battery isolator when measuring the way you are...the initial connection will wake every module and you will have a big draw until the modules enter sleep mode. this may take 5 to 20 minutes.

any aftermarket stuff on the vehicle? List anything that is connected to the vehicle electrical system...even at the power outlets.