Vanessa is leaking brake fluid

HaHAhahaHaHaha. OMG. Perfect. So the brake light came on beeping at us mid day. After thorough investigation I discovered a leak in the rear brake lines. A junction box of some kind is so corroded it's leaking. Well that's my guess.

After considerable research I threw some more fluid in the reservoir to shut it up and get home. Argh.

No idea yet if this arm is related...