So in step 21 the grounding plate that sits on top of the bracket… which flex is that attached to? This X i’m working on was used for navigation on a motorcycle trip by my client and from that point on the rear came image was vibrating. I noticed this flex is torn but can’t identify the flex it came detached from. Hope someone knows so I don’t need to pull it apart to find out before gettinf the right parts in?! Many thanks in advance