01 Bonneville SSEI radio circuit problem

[eagle8587]

I have a 2001 Bonneville SSEI and i recently installed an aftermarket radio
the problem is now that something in the radio circuit is drawing about 0.5 Amps and killing my battery so here are the tests i have done and what i have found out

i bench tested the radio works as it should measured 0.012 amps {edit} in the off state
tested the radio in the car turned then engine on and off and opened the door to turn off RAP, after 20 minuets i still have the same reading just over 0.5 amps i pulled out the radio and harness adapter and did the same test and still get just over 0.5 amps

for the test in my car i put my meter in where the fuse goes so i am only measuring the radio circuit

the harness adapter is a GMOS-09

if anyone knows what else runs off of the radio circuit that would be helpful

 

[melsg5]

if the radio is on, engine is off, and you open the door, does the radio turn off? have you tried this test with the original radio?

 

[eagle8587]

yes the radio turns off after the the engine is off and the door is opened and as far as the factory radio it is broken that is why i replaced it

with the tests i have done i have ruled out the radio to be the current cause of the drain