could be the alternator

no, i have a great passion for it and i have never lost interest. i love my job. although some shops have been easier to work for than others

If the threads aren’t damaged in the reservoir it will be fine to get a new cap

Most likely air in the brake lines. Inspect them and see if there’s any fluid leaks, do a brake flush if it hasn’t been done in a while. I’d get it checked out soon because if it happened once it will likely happen again

The greenish wire is your ground which should correspond to the black wire. White should be positive and goes to red