i just fitted my very first boost gauge today, went very well if i do say so myself

she's all wired up now and looking sweet.
only problem is that when i start up the car is that it doesn't work till you put on the headlights, any ideas as to what i'v done wrong?
also, the reading on the gauge doesn't match what the boost controller is telling me. idles at -0.45 roughly on the boost controller and on the boost gauge its at about -0.02 bar, any ideas on what thats about?