5.7 mercruise battery draw

[machz1000]

i have a 1992 5.7 mercruiser and it has had the alternator replaced with a delco alternator with a spark arrestor kit installed in it.There is a .34amp draw comming from it (battery will go dead after a few days of sitting)when you unhook the excite and sense leads load is gone the diode in alternator tested good any ideas would be appreciated thanks

 

[Bt Doctur]

something inside the alt is not right, is this a car alt with the screens installed ? sense ans excite reversed?

 

[machz1000]

its an automotive alternator with screens the diode in it is ok and i tried swapping the sense and excite sense and excite wires

 

[Bt Doctur]

A load on the sense/excite tells you something is up with that alt. maybe the regulator is wrong or the diode trio is bad
THe GM line was usually only single wire. The 2 push on terminals are capped and sealed. Only see one marine gm type listed with 3 wires but its specific to a marine unit

 

[Scott Danforth]

the excite wire should go dead with the key off (since the power to the excite should go thru the key)

 

[machz1000]

I put another alternator on it still have the draw. My excite wire (purple)has key on power only and sense (red/purple) has constant power

 

[Bt Doctur]

I put another alternator on it still have the draw
A true marine built one or an automotive one with screens?If automotive , could be trying to backfeed an idiot light circuit thru the regulator
Battery ,"sense" is #2 connector, facing the rear of the alt its to the far right . The idiot light "excite" is pin #1 far left
Sense and excite reversed? wrong regulator in the alt?

 

[Bt Doctur]

https://www.youtube.com/watch?v=NaQqJRAZuEI