The brake lines must not hang, brake hoses may; if they hang down too much, the line must be fixed.
Volkswagen has of course taken this into account, with the Volkswagen Bay Window Bus it is a clamp for two lines next to each other and for the Volkswagen Vanagon there are two versions, the first for one line, the second as for the Bay Window Bus for two lines.
They have been applied in several places; if they have disappeared, there will be a visible hole in the chassis, this way you can locate where which clamp or clip has to be mounted.
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