WARNING: THIS IS ONLY FOR OLD STYLE ADRENALINE HARNESSES WITH THE 1 WIRE FUEL PRESSURE SENSOR WIRE.
D-7225-6 is a fuel pressure harness adapter to upgrade the D-7225-5 main wiring harness to the D-7225-5FP main wiring harness.
The D-7225-6 adapter adds the 3-pin fuel pressure harness to the main plug of the Adrenaline main wiring harness. Most main wiring harnesses do not need this adapter. You will only need to add this adapter if you have a new board and the old style main wiring harness with the single yellow wire for fuel pressure sensing instead of the 3-pin plug.