I am looking to do a diesel purge on my 76 300d, but I am not exactly sure which line is the supply line. In the attached picture on top of the spin on filter, there is the return line from the injectors, another line from the injector pump (I think), and the cigar hose. There is also a line at the bottom of the spin on filter. There is not an inline filter on any of the lines.

Please help me clarify where I should attach the supply and return hoses for the purge.

Thank Brian

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