Electrical/ battery drain troubleshoot

[rooster]

UPDATE:

The good news is that when I worked on the car today the horn, door locks and interior lights all worked ! I didnt have to do anything, they just worked.

The bad new is I blew the snot out of the multi-meter, forgot the door was open, looks like a fuse might fix it.

I spent some time just cleaning gounds (1 really bad) on the raditor support and also pos cable lug where the fuseable links take off. After doing all this I placed a test light between the pos cable and battery and only got a dim light, if i opened the car door the light got brighter. now I just need to find some fuses for the meter to see how much drain is there. Also need to check for alt backfeed. Thanks for the help.