[Richard L]

First you need to cut the wiring from pin33 in two. Connect the white wire to the "one half" from the pin33. Then connect the brown wiring to the other half. If you are not sure what I am trying to say, take a look at the wirng diagram on this thread.

The purple will enable the "dim" trimmer for night driving. It need to be wired to a head lamp (+) side. If you don't mind the gauge led gets too bright at night, leave it unconnected.Tape it up.