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Yes, you are tapping the high beam jumper wire into the lowbeam wire with the diode inline (make sure the line on the diode is like in the pic).The jist of it is that im connecting the "jumper harness" to the High beam wire and the HID ballast low beam wire on the relay harness correct?
When you power the high beams on the OEM relay shuts off the low beam signal, but the jumper maintains that signal by tapping back into the lows...The diode provents that from always being the case.