About 10 month ago a large fuse box; I think it’s called the IDCM got wet because a clogged drain hole.
Car wouldn’t start. I removed the box; I let it air dry for two days and the car started up. Because the box got wet I decided to purchase a use IDCM. I made sure the part number was correct. I put the new IDCM and never had a problem until last month where the car wont start at times.
Within the last month Sometimes the car starts and sometimes it doesn’t. When the car starts it’s usually after I go back to autozone for a new battery... battery is under warranty. Autozone has given me 3 new battery. Every time I put a new one in the car starts right up. My headlights and interior cabin lights constantly surge.
Starter?
Bad ground?
BCM or ECU?
Help please

Found this wire hanging...

Close up Noticed wire or a ground missing