B767 pilot reported while turning on lights for takeoff they noticed an acrid burning rubber smell and saw smoke coming from the overhead panel. Flight crew taxied off runway; shut down engines; and deplaned passengers.

Narrative

Holding short of Runway; we were cleared for position and hold. I push power levers up as we crossed hold short and turned on appropriate lights. That is when we smelled acrid burning rubber smell. Relief Pilot saw smoke coming from lower left section of overhead panel. We reported to tower that we needed to taxi clear of runway (since we were not cleared for takeoff yet). Once clear of runway; we completed after landing flow; as well as reviewed rejected takeoff and smoke / fumes QRC. We discussed donning O2 but symptoms had dissipated.We coordinated with ground to send fire equipment/ trucks to check us over. During that time; we coordinated with Flight Attendants (FAs) and Passengers. FAs reported smelling fumes as well; all the way back in jump seats by door 2L/R. Rescue personnel found nothing as smell dissipated an there was no more smoke being produced. Shut down engines on ground; safed" doors and rescue chief / maintenance / station manager boarded at 1L. They all reported the acrid smell as well. We decided to deboard airplane there; out of an abundance of caution. All Passengers exited thru 1L; down air stairs and bussed to terminal. At some point; we noticed runway turnoff light circuit breaker had popped. We were towed to Maintenance removed overhead panel for runway turnoff lights (lower left of overhead) and found considerable charring. Photos attached. Throughout; continuous coordination with Dispatch; station ops and Chief Pilot; and local maintenance with Maintenance Control."