Hey there sorry if these questions are obvious I don’t know much about cars yet because this is my first car an I am only 18 and plan on doing most work on my car myself but anyways so I have a few questions so my charging system has a problem I think because the battery won’t charge and when I tested the voltage with the car on it didn’t go up any at all. Even after waiting a few mins and putting the car under load made the lights dim and the voltage drop.
So looking further into things today I found out this thing is disconnected I thought it was a ground connection to something but I could be wrong and I don’t where it goes or what it is for exactly if someone can help me with any info I can probably fix it myself.
Also I noticed the radio doesn’t have any power and won’t turn on so I figured it was a bad fuse and went to test the fuses and there are 2 that are bad ( I used a circuit light tester) I have them circled in red. I want to make sure I know what they are for so if you could let me know that would be great. The one on the first image in the manual it says that the fuse is 10A but its a 15A in there currently why is that? It’s for the radio if I am correct right? also, the fuses to the left of the 15A all didn’t light up my light tester ( I could not have tested it right)
I also noticed that the car window doesn’t work on the driver’s side. The second image has a fuse that didn’t light up the tester as well it is circled in red is that to the door mirror heater? Just making sure I read the diagrams correctly. link to image
Also here the images to the diagrams