Do the lights have their own material ? If so, can set to glow via super-ambient, dialled beyond 1.000. But, as I understand it, this route is deprecated in favour of setting 'emission' via Cycles. Also, 'super-ambient' seems to have a surface brightness limit. Cycles can be set bright enough to dazzle...

If 'lights' are a small or tiny portion of a mapped texture, you may need to set up a mask...

https://www.deviantart.com/nik-2213/art/Poser-glow-by-Super-Ambient-or-Cycles-Emission-909755263