Fired-up type, source of illumination (7)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
kindled
'fired-up' is the definition.
'type source of illumination' is the wordplay.
'type' becomes 'kind' (I've seen this before).
'source of illumination' becomes 'led' (light emitting diode).
'kind'+'led'='KINDLED'
(Other definitions for kindled that I've seen before include "was inspiring" , "Set on fire" , "Inspired" , "Awoken" .)