Don't know trunk bulb number. Is the switch turned on? The black knob disables the light, or allows it to function when trunk is open. There is a switch in the latch that grounds the light. The 0 position on the headlights is daytime running lights. All the exterior lights come on, but dash lights stay off and high beams will only flash when activated. Switch to on position and dash lights work, and high beams will stay on when activated.